At least 33 inmates have been killed in a gang massacre inside a Brazilian prison - just days after 56 were killed and mutilated in a jail riot in a neighbouring state.
The latest violence erupted in Roraima state's largest penitentiary today, and horrific pictures have emerged from inside the building showing a pile of corpses in the corridors.
There had been warnings of further violence following the massacre five days ago, which saw members of one drug gang butcher inmates from a rival group.
Special forces were deployed to the prison on the outskirts of Boa Vista after violent clashes between members of rival gangs in the jail.
The facility is chronically overcrowded with 1,475 prisoners in cells meant for just 750 inmates.
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