Image provided by Roraima em Tempo newspaper shows policemen standing guard to impede a invasion by relatives of prisoners outside the Agricultural Penitentiary of Monte Cristo in Boa Vista, Roraima state, Brazil, on Jan. 6, 2017. At least 33 prisoners were killed in a massacre at the Agricultural Penitentiary of Monte Cristo, the biggest one in Roraima state, northern Brazil, reported on Friday morning the Justice and Citizenship Ministry of the state government. (Xinhua/Fábio Calilo/Roraima em Tempo)
