Sao Paulo, Rabi'II 27, 1438, January 25, 2017, SPA -- Some 200 prisoners escaped a Brazilian prison after a riot Tuesday, authorities said, in the latest in a string of violent incidents at prisons, dpa reported. The riot in the CPP III prison in Bauru, in the southern state of Sao Paulo, started when an inmate was discovered using a cell phone, the state Secretariat of Prison Administration told dpa. Prisoners set fire to several mattresses during the morning rebellion, according to the state-run Agencia Brasil news agency. More than 120 people were killed in the first weeks of 2017 in bloody brawls inside the prisons, most attributed to fights between criminal groups that are disputing the control of drug trafficking in the country. As one of several measures to deal with the crisis, President Michel Temer recently sent federal troops to shore up prison security in several states. -- SPA 03:17 LOCAL TIME 00:17 GMT www.spa.gov.sa/w319138