At least 57 people have died in a riot in a Brazilian jail.
The clashes involved two rival gangs in the facility in the northern state of Para.
The violence reportedly erupted when members from one prison wing invaded a block controlled by the other group.
Most of the victims are believed to have died from suffocation after gang members set fire to part of the building.
Two guards taken captive were later released.

Qatari helicopter crashes during 'routine duty', rescue mission ongoing
Trump threatens Iran with power plant strikes over Hormuz blockade
Saudi Arabia orders Iranian military attache, embassy staff to leave
Ukraine says talks on resolving war to continue in US on Sunday
Trump threatens to send ICE to airports over funding impasse
