Supreme Court Justice Alexandre de Moraes recently criticized the use of press leaks to trigger civil investigations, arguing that such practices unfairly damage public officials, particularly during election cycles. According to comments made during a plenary session on the Law of Administrative Improbity, Moraes stated that some prosecutors plant stories in the media to justify opening inquiries. Critics, however, point to a contradiction in the Justice’s own record, specifically citing the 2024 preventative detention of former special advisor to the Presidency Filipe Martins, which was based on a news report with false information.
Why does the judiciary criticize media-led investigations?
Justice Moraes argues that civil inquiries initiated by news reports create a “grave” burden for public figures without requiring concrete initial evidence. During the judgment on the Law of Administrative Improbity, he stated that members of the Public Prosecutor’s Office often provide information “in off” to journalists, only to use the subsequent publication as the formal basis for an investigation. According to the Justice, this cycle allows for the weaponization of legal processes to influence political outcomes, as these inquiries are frequently archived only after the electoral period has concluded.

What is the precedent regarding the Filipe Martins case?
The credibility of Moraes’ critique has been challenged by the February 2024 detention of Filipe Martins. According to the sources, the decision to order Martins’ preventative detention relied on a report with false information by journalist Guilherme Amado, published by the portal Metrópoles, which alleged that Martins had traveled to the United States alongside former President Jair Bolsonaro. Subsequent documentation provided by Martins’ defense and official records from U.S. authorities confirmed that Martins did not enter the United States during the period in question, weakening the thesis of flight risk used by Moraes to justify the preventative detention. The discrepancy between the Justice’s current stance on “leaked news” and his own reliance on the Metrópoles report has drawn sharp criticism.
How do investigative practices affect public officials?
The primary concern regarding these investigations is the “reputational cost” to the target. Moraes noted that even if an inquiry is eventually dismissed, the initial phase often triggers public scrutiny that cannot be reversed. While the Justice calls for more rigorous internal oversight within the Public Prosecutor’s Office to prevent the “rubber-stamping” of weak cases, his critics argue that the Supreme Court itself has set a dangerous standard by validating reports from the media as sufficient grounds for restrictive measures like imprisonment.
Frequently Asked Questions
Can a newspaper report be the sole basis for a criminal investigation?
Under Brazilian law, while press reports can trigger preliminary verifications, jurisprudence generally requires that the Public Prosecutor’s Office substantiate allegations with independent evidence before initiating formal, restrictive proceedings.

What is the status of the case against Filipe Martins?
Following the presentation of evidence that the alleged flight to the United States did not occur, the defense has challenged the legal basis for his detention, citing the inaccuracy of the information used to justify the risk of flight.
Has the Supreme Court restricted the use of media leaks?
Justice Moraes has publicly advocated for greater scrutiny of these practices within the Public Prosecutor’s Office, though his critics argue that judicial practice at the highest level remains inconsistent with this rhetoric.
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