At least eight inmates have died at a prison in the city of Porto Velho in north-western Brazil. The prisoners died from smoke inhalation after fellow inmates set mattresses alight in the Enio dos Santos jail in Rondonia state.
The prison director said the clash was set off by the transfer of the leader of a criminal gang to the jail, which is controlled by a rival gang. Officials said there could be a link to a similar incident in Roraima state.(BBC,2016)