Gang violence in Brazilian prisons is common. However, officials reported that the inmates had shown no signs prior to the riot that they would start something of such magnitude. The Altamira prison is supposed to hold 200 inmates, but was reportedly holding over 450 at the time of the riot. It was later revealed that the prison only had 33 guards, with the municipality admitting this was nowhere near enough to ensure security. though prison officials deny there was overcrowding and (CV), with CCA attacking CV. CV is a large
Rio de Janeiro-based gang that has a longstanding history of violent confrontation with (PCC), another large national group. Comparatively, the CCA is a small regional gang in
Pará. According to
The Guardian, the attack was part of a longstanding drug trade turf war that is ultimately between CV and PCC. ==Attack==