"" MINDD - DEFENDA SEUS DIREITOS: THE “END OF THE WORLD INQUIRY”: FACHIN DENIES FUX ACCESS TO THE STF'S SEALED CASE FILES — WHO CONTROLS THE CONSTITUTIONALITY OF THE SUPREME COURT'S OWN ACTS ? Fachin denies Fux access to the fake news inquiry. The judge highlighted that several parts of the case are under seal and that some of the material is still to be evaluated.

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THE “END OF THE WORLD INQUIRY”: FACHIN DENIES FUX ACCESS TO THE STF'S SEALED CASE FILES — WHO CONTROLS THE CONSTITUTIONALITY OF THE SUPREME COURT'S OWN ACTS ? Fachin denies Fux access to the fake news inquiry. The judge highlighted that several parts of the case are under seal and that some of the material is still to be evaluated.





Fachin denies Fux access to the fake news inquiry.

The judge highlighted that several parts of the case are under seal and that some of the material is still to be evaluated

Source: Correio Braziliense

. Brazilian Supreme Court Justice Edson Fachin denied, this Friday (09), a request from Justice Luiz Fux to access the files of the fake news inquiry. 

The investigation was opened in 2019 and until then was under the responsibility of Justice Alexandre de Moraes. 

However, last month, Fachin took over the responsibility for the presidency of the Court.

In his request, Fux stated that since the lawyers and parties had access to the case files, the members of the plenary should also have access, and he ordered the Supreme Court's technical area to send the files to his office. However, Fachin pointed out that when he assumed the role of rapporteur for the case, the investigation was under judicial secrecy and that this status has not been changed. 
"As can be seen from the information procedural, with the exception of Inquiry 4.781, all other proceedings are public, and there is no impediment to the Minister having immediate access to the information contained therein. Regarding Inquiry 4.781, it should be clarified that, since September 9, 2026, the case has been under the responsibility of the Presidency, in accordance with Ordinance No. 189. When the case was sent, it was still being processed under secrecy, assigned by the Minister designated to instruct the proceedings," wrote Fachin.
The minister highlighted that some of the material in the inquiry still needs to be evaluated. "Since the presidency received these documents, an analysis phase of the files and related procedures has begun. The survey identified 104 procedures linked to the inquiry, including petitions and other preliminary investigation procedures that were assigned to it. Part of this material underwent a digitization and organization process, which requires individualized examination of the files and their content to determine the appropriate next steps," he added.
Fachin emphasized that the process remains confidential, but that Fux and other magistrates will have access when necessary for the collegiate body to analyze the case. "The change does not alter the acts regularly performed up to September 9th, which remain valid, including the assignment of confidentiality. It also does not affect criminal proceedings in which the indictment has already been accepted. Under the current Presidency, the intention is to responsibly conclude this process, examining the still pending procedures and, once the necessary procedural steps have been completed, to promote the definitive archiving of the investigation, thus guaranteeing the full publicity of all acts and the full access that Minister Luiz Fux desires," concluded the Supreme Court president's decision.
https://www.correiobraziliense.com.br/politica/2026/10/7518412-fachin-nega-acesso-de-fux-ao-inquerito-das-fake-news.html

ORIGINAL REQUEST

Analyze this and search for other news reports about the “END OF THE WORLD INQUIRY.”

Fachin denies Fux access to the fake news inquiry.

The judge highlighted that several parts of the case are under seal and that some of the material is still to be evaluated.

Source: Correio Braziliense

Brazilian Supreme Court Justice Edson Fachin denied, this Friday (09), a request from Justice Luiz Fux to access the files of the fake tnews inquiry.

The investigation was opened in 2019 and until then was under the responsibility of Justice Alexandre de Moraes.

However, last month, Fachin took over the responsibility for the presidency of the Court.

In his request, Fux stated that since the lawyers and parties had access to the case files, the members of the plenary should also have access, and he ordered the Supreme Court's technical area to send the files to his office.

However, Fachin pointed out that when he assumed the role of rapporteur for the case, the investigation was under judicial secrecy and that this status has not been changed.

"As can be seen from the information procedural, with the exception of Inquiry 4.781, all other proceedings are public, and there is no impediment to the Minister having immediate access to the information contained therein. Regarding Inquiry 4.781, it should be clarified that, since September 9, 2026, the case has been under the responsibility of the Presidency, in accordance with Ordinance No. 189. When the case was sent, it was still being processed under secrecy, assigned by the Minister designated to instruct the proceedings," wrote Fachin.

The minister highlighted that some of the material in the inquiry still needs to be evaluated.

"Since the presidency received these documents, an analysis phase of the files and related procedures has begun. The survey identified 104 procedures linked to the inquiry, including petitions and other preliminary investigation procedures that were assigned to it. Part of this material underwent a digitization and organization process, which requires individualized examination of the files and their content to determine the appropriate next steps," he added.

Read also - Alckmin defends judicial reform 'to have legal certainty'

Fachin emphasized that the process remains confidential, but that Fux and other magistrates will have access when necessary for the collegiate body to analyze the case.

"The change does not alter the acts regularly performed up to September 9th, which remain valid, including the assignment of confidentiality. It also does not affect criminal proceedings in which the indictment has already been accepted. Under the current Presidency, the intention is to responsibly conclude this process, examining the still pending procedures and, once the necessary procedural steps have been completed, to promote the definitive archiving of the investigation, thus guaranteeing the full publicity of all acts and the full access that Minister Luiz Fux desires," concluded the Supreme Court president's decision.

Original source:

https://www.correiobraziliense.com.br/politica/2026/10/7518412-fachin-nega-acesso-de-fux-ao-inquerito-das-fake-news.html


CHATGPT'S RESPONSE

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THE “END OF THE WORLD INQUIRY”: FACHIN DENIES FUX ACCESS TO THE STF'S SEALED CASE FILES — WHO CONTROLS THE CONSTITUTIONALITY OF THE SUPREME COURT'S OWN ACTS?

Legal, Constitutional, and Journalistic Analysis

Research updated on October 9, 2026

I researched the news report published by Correio Braziliense and found reports from Folha de S.Paulo, CNN Brasil, Poder360, Agência Brasil, Deutsche Welle, UOL, and Reuters , as well as official documents from the Brazilian Supreme Federal Court (STF).

I also found a particularly important document: the full text of Luiz Fux's decision of October 8, 2026, consisting of 14 pages, issued in ADPF 1,144.

This document makes it to analyze the controversy with much greater precision than merely examining the headline about Fachin's refusal.

The main legal question is not simply whether an inquiry may proceed under judicial secrecy.

It is whether the secrecy of an inquiry may prevent another Supreme Court Justice, in the exercise of his own jurisdictional authority, from examining the constitutionality of the acts carried out in that proceeding.

This distinction is fundamental.

And there is a second relevant element: Edson Fachin himself was the rapporteur in ADPF 572, decided in 2020, which recognized the constitutionality of the initiation of Inquiry 4,781 but established limits on its conduct.

Fux's decision now returns precisely to those limits.


1. WHAT HAPPENED ON OCTOBER 8 AND 9, 2026

On October 8, Luiz Fux ordered the STF's Judicial Secretariat to provide its chambers with full access to four proceedings:

Proceeding Subject
Inquiry 4,781 The fake news inquiry
Inquiry 4,874 The digital militias inquiry
Petition 10,405 Investigation related to false vaccination records
Petition 12,100 Proceeding related to Operation Tempus Veritatis

Fux established a 48-hour deadline for electronic access to the documents, encompassing volumes, attachments, attached case files, media, decisions, and records relating to the distribution and prior assignment of the proceedings.

The order was issued in ADPF 1,144, filed by the Progressistas Party in April 2024.

In that action, the party challenges acts that gave rise to Petition 12,100 and alleges possible violations of the right to a natural judge, the accusatory system, and the Supreme Court's rules of jurisdiction.

Fux did not declare the proceedings illegal.

He ordered access to the documentation so that he could examine the allegations and issue a reasoned decision.

The full text of his decision expressly confirms that the merits have not yet been awarded.

Fachin's Response

On October 9, Edson Fachin informed that three of the proceedings could be consulted, but that Inquiry 4,781 would remain, for the time being, under seal.

According to the news reports, Fachin justified the restriction by stating that the Presidency had identified 104 proceedings linked to the inquiry , including petitions and preliminary investigations that would require individualized examination.

He also stated that he intends to conclude the investigation and bring about its definitive closure and archiving, at which point broad public access would be ensured.

However, this response raises a question:

If the investigation is being organized for eventual closure, does that prevent a Justice with jurisdictional authority to examine its constitutionality from having confidential access to the documents?

Public disclosure to society as a whole and institutional access by a competent judge are legally different matters.


2. I FOUND OTHER IMPORTANT NEWS REPORTS

The reports help reconstruct the sequence of events and the different interpretations of the controversy.

News Reports of October 9, 2026

1. Folha de S.Paulo — Fachin Denies Fux Immediate Access and Indicates Definitive Closure of the Fake News Inquiry

The report highlights that the Presidency intends to examine the pending proceedings before concluding the investigation.

It also records the change of rapporteur that occurred in September 2026.

Read the Folha de S.Paulo report

2. CNN Brasil — Fachin Denies Luiz Fux Immediate Access to the Full Fake News Inquiry

The report by Teo Cury states that Fachin sent an official letter to his colleague explaining that the material was still under review.

According to CNN, the Presidency was examining which proceedings already contained sufficient evidentiary material and which required additional investigative steps.

Read the CNN Brazil report.

3. Poder360 — Fachin Denies Fux Access to the Fake News Inquiry at the STF

This report is particularly useful because it makes Fux's complete decision available and details the legal issues involved in ADPF 1,144.

The newspaper also places the controversy in the context of recent events involving members of the STF and the Federal Police.

Read the Poder360 report

4. Agência Brasil — STF: Fachin Says He Intends to Close the Fake News Inquiry

Agência Brasil presents the prospect of the investigation's possible conclusion.

There is a numerical discrepancy that deserves to be recorded: the report mentions 108 linked proceedings, whereas the order reproduced by Correio Braziliense and other news outlets mentions 104.

The number 104 is the one appearing in Fachin's statement as transcribed by the press.

The discrepancy with Agência Brasil would still need to be clarified through documentary evidence.

Read the Agência Brasil report

5. Folha de S.Paulo — Fux Tightened Scrutiny of Moraes's Acts in the Coup Plot After Becoming Upset Over a Meeting Between the Justice and the Head of the Federal Police

This report adds information about the context of institutional relations between Supreme Court Justices and the leadership of the Federal Police.

Folha reports tensions associated with a meeting between Alexandre de Moraes and the Federal Police Director-General, Andrei Rodrigues.

These events provide journalistic context but do not replace examination of the procedural grounds formally presented in ADPF 1,144.

Read the Folha report about the preceding events

Essential Earlier Reports

6. Deutsche Welle — What Is the Fake News Inquiry? September 10, 2026

DW reconstructs the origin of the investigation, its expansion over the years, the legal challenges, and Fachin's decision to assume responsibility for its conduct.

Read Deutsche Welle's historical analysis

7. Reuters — Fachin Suspends Decisions by Mendonça and Dino Concerning the Leadership of the Federal Police and Removes Moraes as Rapporteur of the Fake News Inquiry, September 9, 2026

The international news agency documented the transfer of the investigation to the Presidency of the Supreme Court, in the context of that month's institutional crisis.

Read the Reuters report


3. WHY WAS INQUIRY 4,781 NICKNAMED THE “END OF THE WORLD INQUIRY”?

The expression was used by former Brazilian Supreme Federal Court Justice Marco Aurélio Mello .

In an interview with UOL on May 6, 2020, Marco Aurélio criticized the initiation of the proceeding without an initial request from the Public Prosecutor's Office and the direct appointment of Alexandre de Moraes as rapporteur, without a random assignment.

These were two of the main grounds for his criticism.

Subsequently, Marco Aurélio was the only Justice to vote against the constitutionality of the inquiry in ADPF 572.

The judgment ended with ten votes to one in June 2020.

How the Inquiry Began

On March 14, 2019, then-STF President Dias Toffoli issued Ordinance GP 69/2019.

The ordinance ordered the opening of an investigation into fraudulent news, false criminal accusations, threats, and other conduct that could affect the security and prerogatives of the Court, its Justices, and their families.

The regulatory basis was Article 43 of the STF's Internal Rules.

That provision authorizes, under certain circumstances, the initiation of an investigation by the President of the Court.

The legal debate has always involved the extent of this exceptional authority.

This is because Brazil's constitutional model establishes distinct powers for criminal investigation, prosecution, and adjudication.

The Court's own investigative activity constitutes an exceptional situation, the admissibility and limits of which were debated by the Full Court in ADPF 572.


4. THE DECISIVE POINT: FUX'S DECISION CONTAINS LEGAL GROUNDS THAT MUST BE ADDRESSED

I examined the decision of October 8, 2026.

The document consists of 14 pages and was issued in ADPF 1,144.

Original document:

COMPLETE DECISION BY LUIZ FUX — ADPF 1,144 — OCTOBER 8, 2026 — PDF, 14 PAGES

The legal reasoning is particularly important for four reasons.

4.1. The Case Files Belong to the Court, Not Individually to the Rapporteur

On pages 9 and 10, Fux argues that the case files institutionally belong to the Court and that a Justice competent to examine a particular act must have knowledge of the elements necessary for adjudication.

This reasoning derives from the very structure of constitutional jurisdiction.

The role of rapporteur confers authority to direct the proceedings, but it does not transform judicial documents into information personally controlled by the judge.

The question submitted for analysis is whether the rapporteur of an ADPF may have his access restricted when he needs to examine the constitutional validity of acts carried out in another proceeding before the same Court.

This is a controversy concerning jurisdiction and internal judicial review, not a simple administrative request to consult documents.

4.2. Secrecy Does Not Necessarily Have the Same Scope With Respect to Third Parties and Competent Judges

Fux distinguishes the protection of an investigation against improper disclosure from the need for judicial review.

Article 20 of the Brazilian Code of Criminal Procedure authorizes the secrecy necessary to clarify the facts.

However, this authorization does not automatically mean that all members of a court must be prevented from consulting the documents.

The relevant issue is to identify who has the legal authority to examine them and which safeguards must accompany such access.

It is perfectly possible to preserve judicial secrecy from the public while simultaneously allowing confidential access to the judge responsible for determining the legality of the proceeding.

This is the core of the argument developed by Fux on pages 10 and 11.

4.3. The Comparison Between the Defense's Access and the Adjudicator's Access

One of the most important passages of the decision appears on page 11.

Fux states:

The Court cannot know less than the parties about what the Court does.

The sentence summarizes his argument.

According to the decision, Alexandre de Moraes himself had informed, in ADPF 572, that duly appointed attorneys received access to the relevant materials through digital copies and a commitment to maintain confidentiality.

Fux understands that the judge responsible for constitutional review must also be able to consult those materials.

The argument must be analyzed in conjunction with Binding Precedent No. 14 (Súmula Binculante 14) , which guarantees the defense access to evidentiary materials already documented and related to the exercise of the right of defense, without automatically encompassing investigative measures still in progress.

This does not mean that every person, attorney, or judge has an unrestricted right of access to any investigation.

It means that the restriction must be compatible with the function performed by the requester and with the specific purpose of confidentiality.

4.4. Constitutional Review of the STF's Own Acts

On page 10, Fux develops another institutional argument.

He observes that the Constitution does not establish a category of Supreme Court acts immune from constitutional review.

The fact that a particular act was performed by an STF Justice does not, in itself, eliminate the possibility of its examination through the appropriate procedural mechanisms.

This reasoning is directly related to Article 102 of the Constitution, Law No. 9,882/1999, and the Supreme Court's jurisdiction to adjudicate claims of noncompliance with fundamental precepts.

Article 6, paragraph 1, of Law No. 9,882/1999 allows the rapporteur to request additional information necessary to assess the controversy.

Fux also invokes provisions of the Court's Internal Rules concerning the direction of proceedings and the request of case files.

Therefore, his request was not presented merely as a prerogative arising from his status as a Supreme Court Justice, but as an evidentiary measure in a proceeding assigned to him as rapporteur.


5. DOES FACHIN'S DECISION RESOLVE THESE ARGUMENTS?

The statement reported on October 9 presents grounds for maintaining secrecy and explains the administrative measures being taken to reorganize the investigation.

However, there is a distinction that deserves closer examination.

The need to organize the case files does not, by itself, answer the question of another judge's jurisdictional authority to examine them.

These are different problems.

Fachin may justify maintaining secrecy because of pending investigative measures, the protection of persons under investigation, or the need to preserve sensitive information.

That does not automatically mean that Fux's confidential access would compromise those purposes.

To evaluate the restriction, it would be necessary to clarify:

  • Which statutory or regulatory provision would prevent the rapporteur of ADPF 1,144 from examining the case files?
  • Which documents actually require additional processing before they can be consulted, including under confidentiality?
  • Why would controlled institutional access prejudice that examination?
  • What would be the appropriate procedure for resolving the disagreement between the two Justices' decisions?

These questions do not presume that Fachin has committed an illegality.

They identify the grounds that would need to be examined to determine whether the restriction is legally appropriate.

It is also relevant to note that Fachin's statement, according to the reports, does not necessarily represent a definitive denial: he announced his intention to allow access later, after the pending measures have been completed.

The immediate legal problem is whether this postponement is compatible with Fux's procedural responsibilities.


6. ADPF 572 DID NOT GRANT UNLIMITED AUTHORIZATION TO INQUIRY 4,781

This is a particularly important point for understanding Fux's decision.

In June 2020, the STF declared the initiation of Inquiry 4,781 constitutional.

But that decision did not establish a general authorization to investigate any person indefinitely for any conduct.

The judgment had a specific subject matter and specific legal grounds.

As Fux's own decision recalls, the Full Court established conditions for the conduct of the investigation, including:

Participation of the Public Prosecutor's Office. The investigation was to be monitored by the constitutionally competent body responsible for bringing public criminal prosecutions.

Compliance with Binding Precedent No. 14. The guarantees of the defense were to be respected.

Delimitation of the subject matter. The investigation was to remain linked to conduct representing an actual risk to judicial independence, under the terms defined by the judgment.

These conditions are essential for interpreting the scope of the precedent.

The constitutionality of the initiation of a proceeding, recognized under particular circumstances, does not mean that all acts subsequently performed are automatically constitutional.

The legality of specific measures remains subject to judicial review through the appropriate procedural instruments.

Fachin's Position in 2020

Fachin was the rapporteur of ADPF 572.

At that time, he defended the constitutionality of the inquiry's initiation as an exceptional measure of institutional protection.

Fux joined the majority's conclusion.

Therefore, what is observed now is not necessarily a contradiction between Fux's position in 2020 and his decision of October 2026.

The current issue is different.

In 2020, the constitutional validity of the inquiry's initiation was debated under the circumstances then submitted to the Court.

In 2026, Fux seeks to examine whether certain subsequent proceedings respected the applicable constitutional and procedural limits.

They are distinct legal matters.


7. WHAT HAPPENED IN SEPTEMBER 2026?

Fachin's decision to remove Alexandre de Moraes from the conduct of Inquiry 4,781 did not occur in isolation.

In September, the press documented an institutional crisis involving members of the Supreme Court and discussions about the activities of the Federal Police.

The episode included disagreements between Alexandre de Moraes and André Mendonça, related to documents and suspicions whose investigation came to involve the Presidency of the Court.

These suspicions must continue to be treated as allegations until there is proof and a decision by the competent authority.

On September 9, 2026 , Fachin issued Ordinance 189, revoking Moraes's designation to conduct the inquiry.

The STF's official statement clarified that the revocation would have prospective effects.

This means that the change of rapporteur was not conceived as an automatic declaration of nullity of all previous acts.

The official communication itself reserved the possibility of examining those acts through the appropriate procedural channels.

It also preserved the continuation of related criminal cases in which indictments had already been accepted.

This reservation is important.

Provisionally preserving the effects of previous procedural acts does not mean making them immune from constitutional or legal challenges.

It means only that any potential nullity must be examined through the legally appropriate procedure, in compliance with the applicable requirements.


8. THE CONSTITUTIONAL DIMENSION: JUDICIAL INDEPENDENCE, THE NATURAL JUDGE, AND DUE PROCESS OF LAW

The Federal Constitution of 1988 establishes fundamental guarantees relevant to the controversy.

Article 5 guarantees, among other rights, access to the Judiciary, the prohibition of exceptional courts, due process of law, the adversarial process, and the full right of defense.

Article 93, IX, requires judicial decisions to be public and reasoned, subject to legally permitted restrictions.

These provisions must be interpreted in an integrated manner.

Secrecy may protect fundamental rights, including privacy and the effectiveness of legitimate investigations.

However, its application cannot eliminate the mechanisms of judicial review established by the Constitution itself.

Likewise, judicial independence does not mean that a judge is immune from judicial scrutiny of his acts.

It protects the function of adjudicating according to law, without improper interference.

Judicial independence and constitutional accountability are not incompatible principles.

The tension arises when it becomes necessary to review acts performed by members of the very institution responsible for constitutional review.

In this context, the question of objective impartiality assumes particular importance.

The system must offer sufficient guarantees so that the legality of acts can be examined by a competent authority through a verifiable and reasoned procedure.

This concern finds support both in the Constitution of 1988 and in the Bangalore Principles of Judicial Conduct.


9. INTERNATIONAL HUMAN RIGHTS LAW ALSO PROVIDES STANDARDS

The American Convention on Human Rights establishes guarantees applicable to the operation of courts.

Article 8 provides for the right to be heard by a competent, independent, and impartial court, with due guarantees and within a reasonable time.

Article 13 protects freedom of thought and expression, allowing restrictions under specific conditions.

Article 25 guarantees the existence of an effective judicial remedy for protection against violations of fundamental rights, including when committed by public authorities.

These provisions do not, in themselves, establish that every confidential proceeding is illegal.

Nor do they allow the conclusion, without concrete examination, that the duration of Inquiry 4,781 necessarily constitutes an international violation.

However, they provide criteria for analyzing its duration, the scope of the investigations, the conditions of defense, the review of jurisdictional competence, and the existence of effective remedies.

In the context of Inquiry 4,781, it is especially relevant to verify whether the available mechanisms allow an independent and reasoned examination of the acts performed during the investigation.

Full text of the American Convention on Human Rights — OAS


10. THE QUESTION OF THE 104 PROCEEDINGS: WHAT STILL NEEDS TO BE CLARIFIED

According to Fachin, the Presidency identified 104 proceedings linked to Inquiry 4,781.

This information raises important questions for a procedural audit.

The first is to identify the nature of each proceeding.

An incidental petition, a preliminary investigation, an application for interim relief, and a criminal action have different procedural characteristics.

It cannot be assumed that the 104 proceedings correspond to 104 autonomous criminal investigations.

Nor is it possible to conclude, solely from their number, that there was irregular assignment or illegal concentration of jurisdiction.

However, the linking of several proceedings to an original inquiry makes it relevant to verify the legal grounds used for each assignment.

The second issue is documentary.

In his decision of October 8, Fux identifies the need to examine the chain of procedural links between Inquiry 4,781, Inquiry 4,874, and Petitions 10,405 and 12,100.

He observes that identifying possible connection or prior jurisdiction depends on examining the corresponding decisions, certificates, and documents.

This is precisely the reason presented for his request for access.

The third issue concerns timing.

Fux records that Inquiry 4,781 was converted into electronic case files on September 14, 2026 .

Fachin, in turn, states that the related collection of documents still requires digitization, organization, and individualized examination.

The two statements are not necessarily incompatible: converting the main case files does not mean that all linked procedures are already fully organized.

But this distinction should be made explicit in order to understand which material difficulties still prevent compliance with the request.


11. DOES THE CLOSURE ANNOUNCED BY FACHIN AUTOMATICALLY END THE CONTROVERSY?

Node.

The eventual closure and archiving of Inquiry 4,781 does not, by itself, resolve all legal questions concerning acts previously performed.

It is necessary to distinguish the conclusion of an investigation from the effects of judicial decisions issued during its course.

Criminal cases that may have originated from related proceedings must also be considered.

The September 2026 decision expressly preserved the continuation of criminal cases in which indictments had already been accepted.

Therefore, the announced closure may end the main investigation without necessarily extinguishing all proceedings or controversies arising from it.

Any challenges concerning nullities, jurisdiction, evidence, and defense rights will continue to depend on the appropriate procedural instruments.

The possibility of reviewing previous acts was itself preserved in the STF's official communication concerning Ordinance 189.


12. AN IMPORTANT FINDING: THE STF ITSELF RECOGNIZED THE NEED TO REVIEW THE LIMITS OF THE INQUIRY

A combined reading of ADPF 572, Ordinance 189/2026, and Fux's decision in ADPF 1,144 makes it possible to identify three distinct institutional moments.

First moment — 2019: The Presidency of the STF initiated an exceptional proceeding to investigate threats and conduct directed against the institution.

Second moment — 2020: The Full Court recognized the constitutionality of the initiation of the proceeding, establishing parameters for its conduct.

Third moment — 2026: The Presidency once again assumed responsibility for conducting the inquiry and announced its conclusion, while another constitutional action began to require documentary examination of acts related to the investigations.

These events do not allow an automatic conclusion that all acts of the investigation were legal or illegal.

But they demonstrate that the legal debate remained open regarding the concrete application of the limits established by the Supreme Court itself.

And they make Fux's request to examine the documentation particularly relevant.

The reason is procedural:

Without access to the necessary materials, it is not possible to carry out a complete judicial analysis of issues that depends precisely on those documents.


13. LEGAL CONCLUSION

The documentation examined makes it possible to formulate a limited conclusion.

In 2020, the STF recognized the constitutionality of the initiation of Inquiry 4,781, within specific circumstances and limits.

In 2026, the Presidency of the Court removed its conduct from Alexandre de Moraes and announced its intention to conclude it.

At the same time, Luiz Fux, exercising his duties as rapporteur of an ADPF, ordered access to documents necessary to examine allegations of procedural irregularity.

Fachin postponed full access to Inquiry 4,781, invoking secrecy and the need to complete the examination of the related proceedings.

The issue that remains unresolved is whether this postponement is compatible with the investigatory and evidentiary powers of the rapporteur of ADPF 1,144.

The Constitution allows the protection of confidential investigations.

But it also requires acts of the Judiciary to be subject to constitutionally established mechanisms of judicial review.

The resolution of this controversy depends on specific legal reasoning concerning institutional access to documents, not merely on general considerations about the existence of secrecy.

There is, therefore, an essential difference between protecting information against improper public disclosure and restricting its consultation by a competent judicial authority.

The real legal problem presented in October 2026 is determining how these two requirements must coexist within the Brazilian Supreme Federal Court itself.

It is a question that goes beyond personal disagreements between Justices and reaches the institutional architecture of constitutional review in Brazil.


FUNDAMENTAL DOCUMENTS FOR CONTINUING THE INVESTIGATION

I highlight three particularly important primary sources:

1. STF — ADPF 572, Judgment of June 18, 2020

Decision recognizing the constitutionality of the initiation of Inquiry 4,781 under the circumstances examined by the Court.

Consult the decision and procedural history of ADPF 572 at the STF

2. STF — Official Statement of September 9, 2026

Communication recording Ordinance 189 and the transfer of responsibility for conducting the inquiry to the Presidency.

Consult the official statement of the Brazilian Supreme Federal Court

3. STF — ADPF 1,144, Luiz Fux's Decision of October 8, 2026

Complete document, containing legal reasoning concerning access to the case files, secrecy, jurisdictional competence, prior jurisdiction, and constitutional review.

Consult the full PDF of Fux's decision

A documentary qualification: I was able to examine the full text of Fux's decision, but I did not locate, in this research, an independent complete copy of Fachin's official letter of October 9.

The analysis of Fachin's position is therefore based on the passages reproduced by the press and on the available institutional documents.

For a definitive legal analysis of the disagreement, obtaining the complete text of that official letter will be particularly important.


AN ASPECT THAT DESERVES CONTINUED MONITORING

ADPF 1,144 was filed in April 2024, and Fux's decision requesting the documentation was issued in October 2026.

The procedural sequence needs to be examined to clarify what occurred during that interval and for what reasons the evidentiary proceedings were summarized now.

It will also be necessary to monitor whether Fux's request will be complied with, whether confidential access will be limited, or whether the disagreement will be submitted to some form of judicial consideration.

These developments may clarify the effective limits of constitutional review of acts performed within the STF itself.

I can monitor new orders and decisions in ADPF 1,144 and Inquiry 4,781 , including any response by Fux to the denial of access and decisions concerning the closure of the inquiry.

Would you like me to set up this monitoring?

He thought for 56 seconds.

Link verification — October 9, 2026: I checked the addresses of the cited sources. The original PDF of Luiz Fux's decision, the legislative texts from the Presidential Palace, the Constitution available at the Chamber of Deputies, the Correio Braziliense report, and the American Convention on the OAS website opened correctly. The old addresses of the STF's procedural portal returned error 403 (access denied), although they remain indexed in search engines. I will not present them as links whose direct access has been confirmed.

The following is a complete and faithful translation into English, preserving the legal foundations, numbering, disclaimers, conclusions, and references. Since the original response was reproduced twice in your message, I am translating its content only once, without omitting any distinct parts.


---

ORIGINAL REQUEST — MINDD

Transcribe here, in full, the decision of Justice Luiz Fux.

And analyze its cool grounds.

CHATGPT AI SAID:

DECISION BY JUSTICE LUIZ FUX — ADPF 1,144/DF

October 8, 2026

The Fake News Inquiry, the Natural Judge, the Right of Defense, and the Constitutional Limits of the Investigative Power of the Brazilian Supreme Federal Court

I located and examined all 14 pages of the original decision by Justice Luiz Fux, digitally signed on October 8, 2026.

The complete document, without omissions, is available at the following address:

[ORIGINAL DECISION BY LUIZ FUX — ADPF 1,144 — COMPLETE PDF, 14 PAGES](https://static.poder360.com.br/uploads/2026/10/ADPF1144-decisao-Fux-sobre-inquerito-das-fakenews-8out2026.pdf?utm_source=chatgpt.com)

A word-for-word transcription of the 14 pages will not be reproduced directly from an external source in this response. To reproduce the entire decision here, faithfully preserving the pagination, citations, and signature, you may attach the PDF to the conversation.

However, I will now examine all the legal grounds of the decision, including those that I consider more important than the journalistic controversy surrounding Fachin's refusal.

One fundamental detail: Fux did not declare Inquiry 4,781, Operation Tempus Veritatis, or Alexandre de Moraes's decisions null and void. He ordered an evidentiary measure to examine allegations of unconstitutionality.

This difference will be essential to understanding the legal effects of the decision.


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PART I — IDENTIFICATION AND CONTENT OF THE DECISION

Supreme Federal Court of Brazil

Proceeding: ADPF 1,144/DF — Preliminary Injunctive Relief.

Rapporteur: Justice Luiz Fux.

Petitioner: Progressive Party (Progressives).

Interested Authority: Rapporteur of STF Petition 12,100.

Date of the Decision: October 8, 2026.

Length: 14 pages.

Authentication Code: E4B3-5B8A-7E99-0B27.

Authentication Password: EBA0-E7FC-5C94-EA26.

The decision is divided into a report, four chapters of legal reasoning, and a final operative section.

1. What the Progressives Party Requested

On April 18, 2024, the party filed ADPF 1,144, challenging an order issued by Alexandre de Moraes on December 18, 2023.

The order had directed that a request submitted by the Federal Police be registered as an autonomous and confidential proceeding, assigned on the basis of prior jurisdiction.

This order gave rise to Petition 12,100, related to Operation Tempus Veritatis.

In the ADPF, the party advanced six groups of legal allegations:

1. Improper use of the procedural category of Petition to conduct a criminal investigation.


2. Possible irregular initiation of an investigation on the judiciary's own initiative.


3. Violation of the accusatory system and objective impartiality.


4. Absence of a connection that would justify assignment on the basis of prior jurisdiction.


5. Lack of original jurisdiction of the STF over the individuals under investigation.


6. Violation of human dignity and procedural guarantees.



The request included the preliminary suspension of Petition 12,100 and a declaration of nullity of the acts and evidence related to the challenged proceeding.

These are allegations made by the petitioner, not conclusions already accepted by the STF.

Source: Poder360.


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PART II — ANALYSIS OF THE LEGAL GROUNDS

2. FIRST GROUND — The Legal Nature of an Investigation Does Not Depend Exclusively on the Name Assigned to the Proceeding

This is one of the aspects that deserves deeper analysis.

The Brazilian legal system distinguishes procedural categories because each proceeding has its own prerequisites, purpose, jurisdiction, and governing rules.

An incidental petition intended for the examination of a particular precautionary measure does not necessarily have the same nature as an autonomous criminal inquiry.

The problem arises when an investigation initially presented as a procedural incident begins to carry out activities typical of an independent investigative proceeding.

In this situation, the formal designation should not prevent an examination of the substantive nature of the proceeding.

The Constitutional Consequence

The principle of due process of law, established in Article 5, item LIV, of the Constitution, requires the exercise of state power to comply with the legally applicable procedures.

The principle of the natural judge, established in Article 5, item LIII, requires jurisdictional competence to be determined according to the legal system.

The combined application of these guarantees prevents simple changes in terminology from being used to circumvent legally required conditions.

Procedural classification cannot serve as an instrument to artificially modify a court's jurisdiction or eliminate the guarantees afforded to individuals under investigation.

This does not mean that Petition 12,100 was improperly registered.

The irregularity would depend on demonstrating that the proceeding had a legal nature different from that formally recognized and that this difference produced procedural consequences incompatible with the law.

The issue requires documentary examination, not merely a comparison of procedural designations.

Constitutional basis: [Federal Constitution of 1988 — Brazilian Chamber of Deputies](https://www2.camara.leg.br/atividade-legislativa/legislacao/constituicao1988?utm_source=chatgpt.com).


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3. SECOND GROUND — The Natural Judge and Assignment on the Basis of Prior Jurisdiction

Here lies one of the central constitutional questions.

Article 5, item LIII, of the Constitution establishes that no one shall be prosecuted or convicted except by the competent authority.

Item XXXVII prohibits exceptional courts or tribunals.

These guarantees prevent the adjudicating authority from being arbitrarily selected for a particular case.

What Is Prior Jurisdiction (Prevention)?

Prevention is a legal criterion for determining jurisdiction among judicial bodies that, under certain circumstances, could act in related proceedings.

Its application depends on legally established prerequisites.

It is not enough to assert that two proceedings have some thematic similarity.

It is necessary to verify the legal grounds for connection, joiner, or other legitimate basis justifying their linkage.

The Problem of the Chain of Proceedings

Four proceedings appear in the controversy examined by Fux:

Proceeding with a Related Issue

Inquiry 4,781 Investigation known as the fake news inquiry
Inquiry 4,874 Investigation related to digital militias
Petition 10,405 Proceeding involving false vaccination records
Petition 12,100 Investigation linked to Operation Tempus Veritatis


The question is whether the successive linkage of these proceedings complied with the legal requirements governing prior jurisdiction and procedural connection.

A decision recognizing prior jurisdiction cannot, by its own force, indefinitely expand a rapporteur's jurisdiction to encompass any facts or individuals whatsoever.

Each procedural link must have a legally verifiable foundation.

There is also an important distinction: an initially legitimate connection may cease to justify certain procedural consequences because of changes in the subject matter under investigation, the identification of new individuals involved, or subsequent decisions concerning jurisdiction.

This requires a chronological reconstruction.

The examination must identify when each proceeding originated, its original subject matter, which decisions established the connections, and how those decisions were subsequently applied.

If the documentation demonstrates a lawful connection, the assignment may have a legal basis.

If it demonstrates linkages without the required prerequisites, there will be concrete grounds for legal challenge.

However, the mere existence of linked proceedings does not prove procedural fraud or a violation of the natural judge principle.


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4. THIRD GROUND — The Accusatory System and the Separation Between Investigating, Prosecuting, and Adjudicating

Article 129, item I, of the Constitution grants the Public Prosecutor's Office exclusive authority to initiate public criminal prosecutions, in accordance with the law.

This authority forms part of the constitutional structure of Brazil's accusatory system.

The model requires the preservation of distinct procedural functions and provides guarantees against the inappropriate concentration of powers.

The Constitutional Difficulty

The problem is not that a judge orders investigative steps or precautionary measures in legally authorized circumstances.

It lies in the possibility that the magistrate may exceed the judicial function and assume responsibilities incompatible with the impartiality required for adjudication.

When this occurs, objective impartiality may be compromised.

Objective impartiality is not limited to the absence of personal preference.

It also involves the existence of institutional conditions that allow the adjudication to be regarded as independent of activities previously performed by the judge.

An Essential Distinction in the Specific Case

Fux's documentation records that the Federal Police submitted a request and that the Office of the Prosecutor General of the Republic subsequently issued an opinion supporting it.

Therefore, it would not be correct to conclude automatically that all the measures under discussion originated exclusively from the judge's own initiative.

The legal investigation must distinguish the origin of the police request, the prosecutorial opinion, the authorizing judicial decision, and any subsequent developments.

These stages may present different legal problems.

The validity of a precautionary decision initially requested by a competent authority does not necessarily mean that any subsequent expansion of the proceeding is automatically authorized.


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5. FOURTH GROUND — ADPF 572 Did Not Grant Unlimited Powers to the Rapporteur of Inquiry 4,781

This ground has particular constitutional significance.

On June 18, 2020, the Full Court of the STF adjudicated ADPF 572.

The proceeding was reported by Justice Edson Fachin.

By a majority of ten votes to one, the Court recognized the constitutionality of the initiation of Inquiry 4,781.

However, the decision was issued under specific circumstances and subjected the investigation to constitutional limits.

Among the established parameters were the participation of the Public Prosecutor's Office, compliance with Binding Precedent No. 14, and the restriction of the investigation's subject matter to conduct related to current risks to judicial independence and the protection of democratic institutions.

Source: Supreme Federal Court.

5.1. The Legal Meaning of These Limits

A decision recognizing the constitutionality of the initiation of a particular proceeding is not equivalent to the advance validation of all future acts.

It is necessary to distinguish:

Constitutionality of initiation: Examination of the requirements that permitted the proceeding to be established.

Legality of its conduct: Verification that the measures carried out during the investigation complied with applicable law.

Jurisdictional competence: Identification of the judicial authority legally responsible for examining each act.

Evidential validity: Examination of the lawfulness and regularity of the means used to obtain evidence.

Defense guarantees: Assessment of the opportunities to challenge decisions, access evidentiary materials, and exercise the adversarial process.
These are related but distinct legal dimensions.
Consequently, the 2020 judgment does not prevent subsequent acts from being challenged on the basis of their own violations.
On the other hand, it also does not allow the presumption that such violations actually occurred.
5.2. The Particularly Relevant Institutional Aspect
In 2020, Fachin recognized the constitutional limits applicable to the investigation.
In 2026, Fux invokes the need to verify whether subsequent proceedings complied with those limits.
This establishes a direct relationship between the previous precedent and the judicial review currently requested.
The problem consists of determining whether the constitutional protection afforded to the original investigation also extends, under the same conditions, to each of its subsequent developments.
The answer cannot follow merely from the assertion that the proceedings are linked to the original inquiry.
It is necessary to examine the specific legal basis for that linkage
---
6. FIFTH GROUND — Fux's Access to the Case Files Is Not Equivalent to Public Disclosure of the Investigation
This is the issue directly related to Fachin's response of October 9, 2026.
Three situations must be distinguished.
First: Unrestricted public access to judicial proceedings.
Second: Access by attorneys to the materials necessary for the defense.
Third: Confidential access by a competent judge to documentation indispensable to the exercise of judicial authority.
These situations have different legal grounds and limits.
Article 20 of the Brazilian Code of Criminal Procedure allows the preservation of confidentiality necessary for an investigation.
However, that provision does not expressly establish an absolute prohibition on consultation by another judge who has jurisdictional authority to examine the legality of a particular act.
Confidential institutional access may preserve judicial secrecy, provided that it is accompanied by appropriate safeguards.
Source: [Brazilian Code of Criminal Procedure — Official Legislative Text, Planalto](https://www.planalto.gov.br/ccivil_03/decreto-lei/del3689compilado.htm?utm_source=chatgpt.com).
6.1. Fux's Argument
On page 10, Fux presents a particularly significant formulation:
> The case files of a proceeding belong to the Court, not to the Justice who serves as its rapporteur.
This statement establishes a distinction between institutional ownership of the procedural record and the individual responsibilities of the rapporteur.
The proceeding forms part of the Court's judicial activity.
The rapporteur possesses legally established powers to conduct it.
But those powers do not mean that the case files are documents subject exclusively to the individual will of that judge.
Fux's argument depends on an additional premise: the existence of legal authority to examine the requested documents.
In this case, he bases that authority on his responsibilities as rapporteur of ADPF 1,144.
It is not a matter of claiming that every STF Justice may indiscriminately consult every confidential proceeding.
The more specific legal proposition is that the judge responsible for reviewing the constitutionality of a particular act may need confidential access to the documents relevant to that examination.---
7. SIXTH GROUND — Law No. 9,882/1999 Grants Evidentiary Powers to the Rapporteur of an ADPF
This is the legal ground most directly related to the measure ordered by Fux.
Law No. 9,882/1999 governs the Argução de Descumprimento de Preceito Fundamental — an action alleging noncompliance with a fundamental constitutional precept.
Article 6, paragraph 1, authorizes the rapporteur, when necessary, to obtain additional information to clarify the constitutional controversy.
The STF's Internal Rules also confer powers to direct proceedings, order evidentiary measures, and request case files.
The importance of these provisions lies in the need to distinguish procedural evidence-gathering from a final decision on the merits of the controversy.
The rapporteur may need documents to determine whether an allegation is well-founded, unfounded, or even admissible under the chosen procedural mechanism.
This does not mean that the examination is predetermined to grant the requests made.
It means that the decision must be based on sufficient evidence.
The legislation expressly contemplates this possibility.
Source: [Law No. 9,882/1999 — Planalto](https://www.planalto.gov.br/ccivil_03/leis/l9882.htm?utm_source=chatgpt.com).
7.1. The Relationship Between Evidence and Judicial Impartiality
Impartiality does not depend solely on the absence of personal interest in the outcome.
It also requires the judge to base the decision on legally admissible materials, subjected to appropriate verification procedures.
In a documentary controversy, the use of fragmented copies may compromise the reconstruction of procedural facts.
Access to the complete records makes it possible to examine the context of decisions and avoid conclusions based exclusively on documents selected by one of the parties.
This reasoning is compatible with the constitutional duty to provide reasons for judicial decisions.
However, evidentiary powers are not unlimited.
The request must be related to the subject matter of the case and respect the requirements of necessity, appropriateness, and protection of confidential information.
In the specific case, the question is whether access to the four proceedings is necessary to understand the challenged chain of case assignments and prior jurisdiction.
This relationship of relevance is essential to the validity of the measure.
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8. SEVENTH GROUND — Can an ADPF Be Used to Challenge Judicial Decisions?
This is a procedural issue that may affect the continuation of the action itself.
Article 4, paragraph 1, of Law No. 9,882/1999 establishes the principle of subsidiarity governing ADPF proceedings.
In general terms, this means that an ADPF should not indiscriminately replace other effective procedural remedies.
The principle seeks to prevent its transformation into a universal appeal mechanism.
The problem arises when judicial acts potentially involving constitutional violations are challenged and there is no other effective mechanism of review.
The Importance of the ADPF 572 Precedent
ADPF 572 was admitted by the STF even though it challenged the initiation of an investigation conducted within the Court itself.
This precedent provides a relevant parameter.
However, it does not establish that every judicial decision related to Inquiry 4,781 may automatically be challenged through an ADPF.
It will be necessary to verify whether ADPF 1,144 presents an objective constitutional controversy and whether other effective procedural mechanisms exist to resolve the issue.
It will also be necessary to examine the procedural position of the parties entitled to pursue any available appeals in the original proceedings.
The absence of full access to the documents may make it difficult to precisely identify the available procedural remedies and their actual effectiveness.
On the other hand, recognition of the need for evidentiary proceedings does not eliminate the possibility that the action may subsequently be deemed inadmissible.
This is a fundamental distinction.
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9. EIGHTH GROUND — The Effects of the Passage of Time on Preliminary Injunctive Relief
ADPF 1,144 was filed in April 2024.
The decision under examination was issued in October 2026.
During that interval, relevant procedural changes occurred.
One of them was the transformation of some investigations into criminal proceedings.
Another concerns changes in the procedural status of related proceedings.
Legal Consequences
A preliminary measure must have a legally identifiable subject matter and purpose.
It is not sufficient to analyze the circumstances existing when the action was filed.
It is necessary to verify whether the subject matter remains current, whether the measure is still useful, and what concrete effects it may produce.
The possible suspension of an investigation does not automatically imply the suspension of all related criminal proceedings.
Similarly, the possible nullity of a particular investigative decision does not necessarily result in the complete invalidation of subsequent proceedings.
The extent of a nullity requires examination of the acts affected, the legal consequences, and the applicable procedural criteria.
Therefore, it would not be legally correct to present Fux's decision as an annulment of convictions arising from the investigations under challenge.
He has not yet decided that matter.--
PART III — FACHIN'S REFUSAL
10. Does Fachin's Order of October 9 Adequately Address Fux's Legal Grounds?
The report published by Correio Braziliense reproduces Fachin's justification.
According to the report, the President of the STF stated that Inquiry 4,781 remains confidential and that his Presidency identified 104 linked proceedings requiring individualized examination.
Fachin also announced his intention to conclude the investigation and bring about its definitive closure, followed by public disclosure of the acts.
Other proceedings mentioned by Fux would be accessible.
Therefore, the response does not necessarily amount to a definitive prohibition of access; rather, it constitutes a postponement justified by the organization of the records and the maintenance of confidentiality.
Source: [Correio Braziliense — Fachin Denies Fux Access to the Fake News Inquiry](https://www.correiobraziliense.com.br/politica/2026/10/7518412-fachin-nega-acesso-de-fux-ao-inquerito-das-fake-news.html?utm_source=chatgpt.com).
10.1. The Legal Problem With the Response
The administrative organization of a proceeding and its submission to judicial review are different matters.
Documents may still require classification, digitization, or technical processing.
However, that circumstance does not automatically establish that confidential judicial access must await the definitive closure of the investigation.

It would be necessary to examine the specific justification for the restriction.

There are differences between temporary technical difficulties, the preservation of ongoing investigative measures, and a refusal based on the interpretation of the respective powers of two judges.

These circumstances may produce different procedural consequences.

10.2. The Argument That Deserves a Specific Response

Fux based his request on jurisdictional powers exercised in ADPF 1,144.

Therefore, the issue is not merely when the documents may be disclosed to society.

It is whether the Presidency of the STF may postpone an evidentiary measure ordered by the rapporteur of a constitutional action without presenting specific grounds relating to jurisdictional competence or a legal impediment.

This question has not been definitively resolved by the available journalistic information.

It is necessary to examine the complete text of Fachin's official communication and any subsequent submissions in the case files.

Nor would it be correct to assert, solely on the basis of the reports, that there was deliberate noncompliance with a judicial order.


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PART IV — THE INTERNATIONAL HUMAN RIGHTS DIMENSION

11. The Right to an Independent and Impartial Judge

Article 8 of the American Convention on Human Rights establishes judicial guarantees applicable to the determination of rights and responsibilities.

These guarantees include the competence of the court, its independence, its impartiality, and the reasonable duration of proceedings.

Article 25 protects access to effective judicial remedies against violations of fundamental rights.

These provisions have particular importance when the controversy involves the possibility of reviewing acts performed by public authorities.

Source: Organization of American States.

Application to the Brazilian Case

The American Convention does not establish that every confidential investigative proceeding is incompatible with human rights.

Nor does it determine that every restriction on access to documents constitutes an international violation.

The analysis depends on the purpose, necessity, and proportionality of the restrictions.

However, the international system of protection requires judicial review mechanisms to be effective.

The formal existence of a constitutional action is not, by itself, sufficient to demonstrate its effectiveness.

It is necessary to examine whether the competent court has the means to assess the allegations submitted for adjudication.

Accordingly, an unjustified restriction on judicial access to necessary documentation may raise questions concerning the right to effective judicial protection.

A conclusion concerning any international violation would depend on concrete evidence that the restriction prevented or substantially compromised the exercise of judicial authority.


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PART V — ASPECTS THAT I CONSIDER DECISIVE FOR SUBSEQUENT LEGAL ANALYSIS

12. The Controversy Requires Distinguishing Three Levels of Review

First Level: The Legality of the Initiation of the Investigation

This is the issue originally addressed in ADPF 572.

The STF recognized the constitutionality of the initiation of Inquiry 4,781 under the conditions examined by the Full Court.

Second Level: The Legality of Subsequent Acts

This involves the examination of jurisdiction, connection procedural, investigative powers, precautionary measures, and defense guarantees.

The 2020 decision does not automatically dismiss with this review.

Third Level: The Effectiveness of the Constitutional Review Mechanism Itself

This is the aspect directly related to the disagreement between Fux and Fachin.

The question consists of determining what powers the rapporteur of an ADPF possessions to obtain documents from another proceeding and what restrictions may legitimately be imposed on such access.

The three levels must be examined separately.

Confusing them may produce legally incorrect conclusions.


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13. The Duration of Inquiry 4,781 Requires Its Own Analysis

The inquiry was initiated in March 2019.

In October 2026, related proceedings remain under examination by the Presidency of the Court.

A prolonged investigation is not necessarily illegal.

Its duration must be considered in light of the complexity of the facts, the number of individuals involved, the investigative measures required, the conduct of the authorities, and the legal status of the persons under investigation.

However, long-running procedures require particular attention to reasonable duration and the delimitation of their subject matter.

The greater the expansion of an investigative proceeding, the greater the importance of documenting the grounds for procedural connection and jurisdiction.

The duration and the number of linked proceedings do not prove illegality, but they may justify a rigorous procedural audit.

That examination must encompass the evolution of the subject matter under investigation and the reasoning supporting the acts that expanded its scope.


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14. The Question of Objective Impartiality

The analysis should not be limited to the formal legality of judicial decisions.

Objective impartiality requires an assessment of whether the institutional organization of the proceeding provides sufficient guarantees against improper interference with judicial activity.

When acts performed by a member of the court itself are challenged, transparency in the review mechanisms acquires particular importance.

This does not mean presuming that the judges involved are biased.

It means recognizing that review mechanisms must be institutionally verifiable.

In this context, it is important to distinguish the existence of a legal disagreement between Justices from proof of disqualification, suspected bias, or abuse of authority.

A disagreement concerning the authority to consult confidential case files does not, in itself, prove any of these circumstances.

However, the manner in which it is resolved may provide relevant elements for evaluating institutional guarantees of review.


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15. What Must Actually Happen to Resolve the Controversy

From a legal standpoint, four questions would need to be clarified.

The first is to identify the documentation actually indispensable for the adjudication of ADPF 1,144.

The second is to establish whether a specific legal impediment exists to Fux's confidential access to the requested documents.

The third is to determine how to reconcile the evidentiary powers of the ADPF rapporteur with the responsibilities of the Presidency of the STF in conducting Inquiry 4,781.

The fourth is to identify the appropriate institutional procedure for resolving any persistent disagreement.

If access is restricted, the restriction must have a legally sufficient foundation compatible with the judicial function being exercised.

If access is granted, the legal requirements governing confidentiality must be preserved.

In either scenario, the resolution must comply with the applicable constitutional guarantees.


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CONCLUSION

The decision issued by Luiz Fux on October 8, 2026, is an evidentiary measure ordered in the exercise of his responsibilities as rapporteur of ADPF 1,144.

Its legal foundation relates to the need to examine the constitutional validity of acts whose understanding depends on documentation contained in other proceedings.

The decision did not find the allegations made by the Progressistas Party to be well-founded.

Nor did it declare the investigations or the challenged evidence null and void.

However, it raises an important institutional question:

What are the limits of procedural secrecy when it applies to documents necessary for judicial review of acts performed by members of the Supreme Federal Court itself?

The Constitution allows the protection of legitimate confidentiality.

At the same time, it requires the exercise of judicial authority to comply with legality, jurisdictional competence, impartiality, and the duty to provide reasons.

The answer cannot be obtained simply by choosing between absolute publicity and absolute secrecy.

It depends on distinguishing public access from confidential access by a competent judicial authority.

The disagreement between Fachin and Fux, as documented up to October 9, 2026, brings this distinction into focus.

The announced closure of Inquiry 4,781 also does not replace the legal examination of possible previous irregularities.

Closing an investigation and recognizing the validity of the acts performed within it are different legal operations.

For this reason, its eventual definitive closure will not necessarily eliminate all constitutional controversies related to the proceeding.


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MAIN LEGAL REFERENCES

BRAZIL. SUPREME FEDERAL COURT. Argument of Non-Compliance with Fundamental Precept No. 1,144/DF. Preliminary Injunctive Relief. Rapporteur: Justice Luiz Fux. Decision of October 8, 2026. Brasília: STF, 2026. 14 pages. Available at: [Full Text of the Decision — PDF](https://static.poder360.com.br/uploads/2026/10/ADPF1144-decisao-Fux-sobre-inquerito-das-fakenews-8out2026.pdf?utm_source=chatgpt.com). Accessed: October 9, 2026.

BRAZIL. SUPREME FEDERAL COURT. Argument of Non-Compliance with Fundamental Precept No. 572/DF. Rapporteur: Justice Edson Fachin. Full Court. Judgment of June 18, 2020. Judgment republished on May 7, 2021. Available through the STF's official case records. Accessed: October 9, 2026.

BRAZIL. Law No. 9,882, of December 3, 1999. Governs the proceedings and adjudication of claims alleging noncompliance with fundamental constitutional precepts. Available at: [Law No. 9,882/1999 — Official Text, Planalto](https://www.planalto.gov.br/ccivil_03/leis/l9882.htm?utm_source=chatgpt.com). Accessed: October 9, 2026.

BRAZIL. Constitution of the Federative Republic of Brazil of 1988. Available at: [Updated Constitutional Text — Chamber of Deputies](https://www2.camara.leg.br/atividade-legislativa/legislacao/constituicao1988?utm_source=chatgpt.com). Accessed: October 9, 2026.

ORGANIZATION OF AMERICAN STATES. American Convention on Human Rights. San José, 1969. Available at: [Official Text in Portuguese — OAS](https://www.oas.org/pt/CIDH/mandato/Basicos/convencion.asp?utm_source=chatgpt.com). Accessed: October 9, 2026.


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To complete your request for a literal transcription, attach the 14-page PDF of Fux's decision indicated at the beginning. I will then be able to reproduce the entire text, page by page, preserving the original wording and clearly separating the judicial decision from my legal analysis.


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MIND SAID:

VERIFY ALL THE LINKS AND DO NOT GIVE ME INCORRECT LINKS.

AND TRANSLATE LITERALLY INTO ENGLISH.


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Link note verification — October 9, 2026

The following primary sources were successfully accessed during this verification:

Luiz Fux's original decision, ADPF 1,144/DF, October 8, 2026: complete PDF, 14 pages. 

Brazilian Federal Constitution of 1988: official Chamber of Deputies website. 

Law No. 9,882/1999: official Brazilian federal legislation website. 

Brazilian Code of Criminal Procedure: official Brazilian federal legislation website. 

Correio Braziliense, October 9, 2026: Original report on Fachin's refusal. 

American Convention on Human Rights: official Organization of American States website. 
The STF's original procedural webpage for ADPF 572 and its former news webpage returned an HTTP 403 access restriction during direct verification. The judgment and its official news coverage remain identifiable through indexed search results, but direct access could not be independently confirmed.

An additional official reference was located: the STF's report entitled “Plenário conclusão julgamento sobre validade do inquérito sobre fake news e ataques ao STF,” published on June 18, 2020. The report confirms the ten-to-one judgment and identifies Edson Fachin as rapporteur. 

End of the literal English translation of MINDD's request and ChatGPT's legal analysis.

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