The Destacamento de Operações de Informações - Centro de Operações de Defesa Interna () was the Brazilian intelligence and repression agency during the military government (1964–1985). This period started on March 31, 1964 with the removal of the civilian government by military forces and ended in the 1984. DOI-CODI was responsible for suppressing internal dissent against the regime. It acted as a political police, using torture and other counter-insurgency methods, with a focus on anti-communism. Several political activists, intellectuals, artists, college students and journalists were interrogated and at times tortured by the DOI-CODI throughout its existence against clandestine forces and guerrilla groups.