A prison uprising early on Sunday left at least four dead, adding to chaos in Brazil's penitentiary system that has seen almost 100 inmates killed in the past week in a gang war, Daily Mail reported.

The latest violence took place at the Desembargador Raimundo Vidal Pessoa jail in the center of the Amazonian city of Manaus.

Last week, at least 64 inmates have been killed in prisons in or near Manaus. A prison uprising in the neighboring state of Roraima left at least 33 dead.

Source: MENA