The Federal Intervenor of the Federal District, Ricardo Cappelli, said that Military Police informed that the extremists who invaded the Three Powers Square, in Brasília, acted as “professionals” and knew the territory of the Chamber of Deputies and the Presidential Palace. The statement was given at a press conference. “He [Police officer] stated: 'We weren't just facing protesters, there were men on the battlefield with knowledge of the territory, knowledge of combat tactics, characteristics of professionals. They were professional men among the demonstrators’. It is a valuable testimonial. We're looking into it," Cappelli said.