According to the detectives, Ridouan Taghi has been organizing an outbreak from March 2021. According to the NRC , this is apparent from documents from the criminal file against lawyer Youssef Taghi, which a reporter from the newspaper has seen. Youssef Taghi was arrested on October 8 last year. As a lawyer, he regularly visited his cousin in the Extra Secure Institution (EBI) in Vught.

According to the police, there were plans for three violent liberation actions – codenamed Bios – at the EBI or at an extra-secure courtroom in Amsterdam-Osdorp where the Marengo case against Taghi is being heard. A third plan—codenamed Mega Mindy—was to take four EBI employees hostage. Taghi would then have to be released in exchange for their release. 'It has to be done in the Navy Seals way', Taghi would have informed Youssef, among other things.

69 photos of chats with various contacts from Ridouan Taghi's criminal organization were found on Youssef's iPad, the police said. It is not clear who exactly those contacts are.