The data was released just hours after Sao Paulo's security chief, Antonio Ferreira Pinto, resigned amid a wave of violence in the city.

BBC: Sao Paulo sees big jump in murders

However, Sao Paulo's public security secretary, Antonio Ferreira Pinto, has suggested that other criminals may be exploiting the situation to carry out attacks and let the police take the blame.

BBC: Sao Paulo police at war with prison gang

To Brazilians, the name Bibi Ferreira is to musical theatre what Antonio Carlos Jobim is to samba.

FORBES: Video Interview With Bibi Ferreira