A significant arrest was made in Tocantins, Brazil, where João Gabriel de Mello Yamawaki was apprehended for allegedly creating and operating a digital bank known as 4TBANK. This bank is said to have been a major financial conduit for the Primeiro Comando da Capital (PCC), a criminal faction, with illicit financial activity reaching up to R$ 8 billion. The arrest came as part of Operation Decurio, led by the São Paulo Civil Police, aimed at dismantling such criminal financial operations.

The suspect, who has been on the run from law enforcement in São Paulo, reportedly established the digital bank in a central location in Palmas, along with branches in three other states. The implications of his operation are severe, given the scale of the transactions and their links to organized crime, underscoring the challenges authorities face in combating financial networks tied to criminal factions.

Yamawaki's defense claims that his arrest was illegal, asserting that he is proving his innocence in a trial concerning tax crimes. This case highlights the ongoing struggle against financial crime in Brazil and the legal complexities involved as suspects challenge the legitimacy of their arrests and the accompanying charges.