Rio de Janeiro, Oct 11 (IANS/EFE) At least nine prisoners were killed and 20 injured when a fight between rival gangs broke out at a prison in the northern Brazilian city of SÃ£o Luis, authorities said.
The clash at Pedrinhas penitentiary involved jailed members of two drug-trafficking outfits, the MaranhÃ£o state government said Thursday.
Police recently arrested 16 reputed members of one of the two gangs, Bonde dos 40, which is seen as the most powerful criminal organisation in the state.
The brawl inside the prison was followed by the burning of eight municipal buses in attacks across the city of SÃ£o LuÃs. Police suspect the arson incidents were connected to the conflict at Pedrinhas.