Senator Alessandro Vieira (MDB, from the state of Sergipe) filed a request on Thursday (24) to impeach Kassio Nunes Marques, a justice of Brazil's Supreme Court, the STF. According to news site G1, Vieira argues the justice committed a crime of responsibility, an impeachable offense, by ruling on cases tied to Banco Master while people close to him had personal and business relations with the bank.
The complaint centers on a case brought by Destilaria Alcídia against the federal government over the calculation of compensation owed to the sugar and ethanol industry. The case involves billions of reais in precatórios, court-ordered government debt payments, and the filing links it to Master's interests in that market.
In February 2024 the Supreme Court's case system registered Nunes Marques as recused from the case, G1 reports. The entry was reversed the following month, on the grounds that it had been a "mistake by the justice's staff". On October 1, 2024, he took part in the ruling by the court's Second Panel and cast the tie-breaking vote in favor of the creditors, with the tally at 2 to 2.
"Ganhamos Alcídia"
The complaint ties the ruling to messages Federal Police investigators extracted from the phone of Daniel Vorcaro, the owner of Banco Master, who is currently in prison. According to the filing, after the ruling the bank's legal director wrote "Ganhamos Alcídia" ("We won Alcídia") and shared the phone contact of Kevin de Carvalho Marques, the justice's son, with the words "Dominado aqui" ("Controlled here"). Vieira writes in the filing:
"The message 'We won Alcídia', sent by the bank's legal director to its controller, is the most direct evidence that Banco Master had an interest in the outcome of the ruling, even though it was not formally a party to the case. It disproves the defendant's statement, in a plenary session, that he 'never judged any case related to Master'"
Besides removal from office, the senator asks for the justice to be barred from any public post for eight years, the penalty set for those convicted of a crime of responsibility.
The filing, also reported by Brasil 247, now goes to the Senate. Complaints against Supreme Court justices are first reviewed by the Senate's Constitution and Justice Committee, which decides whether they are admissible before any vote in the full chamber. A conviction requires two thirds of the Senate's votes. Similar requests rarely move forward: according to a Brasil 247 count published in December 2025, the Senate had accumulated 81 impeachment requests against Supreme Court justices amid tensions with Justice Gilmar Mendes.