A new prison uprising in Brazil on Sunday left four dead, adding to the chaos in the country's penitentiary system that has killed nearly 100 inmates in the past week in a brutal gang war.
The latest violence took place at the Desembargador Raimundo Vidal Pessoa jail in the centre of the jungle city of Manaus, according to a statement from the government penitentiary agency in Amazonas state, where the facility is located.
Three of the dead were beheaded while one was strangled to death. It did not give a motive for the killings and it was not yet known if drug gangs were involved
In the last week, 64 inmates have been killed in prisons in or near Manaus. A prison uprising in the neighbouring state of Roraima left at least 33 dead.