The Intelligence and Security Police (Span: Policia de Inteligencia y Seguridad), abbreviated as PIS, was a Chilean domestic intelligence agency and secret police operating directly under the supervision of the Communist Party, as part of the Party-founded Ministry of National Security. The PIS was formed in 1967 after the Chilean Communist Revolution had been successful, succeeding and supplanting the Revolutionary Guard, and lasted until 1989, when it was formally abolished after the February coup d'etat. The PIS was responsible for the enforcement of Communist doctrine, serving as a secret police and as a domestic investigative agency chiefly targeting suspected dissidents. The PIS abducted and "disappeared" as many as 7,500 Chilean dissidents and imprisoned an estimated 80,000 addition