Brazil prison riot kills at least 56 in as state - BBC News

At least 56 people are killed in a prison riot in as state in northern Brazil.

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Brazil jail violence: Forty killed in Manaus prisons - BBC News

Brazil prison riot: 'At least 26 dead' in Natal violence - BBC News

Brazil prison riots: What's the cause? - BBC News

Brazil prison riot leaves at least 57 dead -- including 16 decapitated

Dozens killed in Brazil prison riots

Brazil prison riots leave dozens dead as gang violence sweeps northern state of as - ABC News

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55 inmates killed in Brazil prison riots

At Least 56 Inmates Killed in Prison Riot in Northern Brazil

The Evolution of the Most Lethal Criminal Organization in Brazil—the PCC > National Defense University Press > News Article View

Brazil prison riot: 'At least 26 dead' in Natal violence - BBC News

Drugs gang 'kills 33 inmates' in Brazilian jail – FBC News