The Ministry of Public Security, was the secret police, intelligence and counter-espionage agency operating in the Polish People's Republic. From 1945 to 1954 it was known as the Security Office, and from 1956 to 1990 as the Security Service.

Mokotów Prison is a prison in Warsaw's borough of Mokotów, Poland, located at 37 Rakowiecka Street. It was built by the Russians in the final years of the foreign Partitions of Poland. During the Nazi German occupation and later, under the communist rule, it was a place of detention, torture and execution of the Polish political opposition and underground fighters. The prison continues to function, holding prisoners awaiting trial or sentencing, or those being held for less than one year.