Hans Maršálek

Hans Maršálek (19 July 1914 – 9 December 2011) was an Austrian typesetter, political activist, detective, historian, and suspected spy for the Soviet Union. A devout socialist and active in the resistance, he was arrested by the Nazis and imprisoned in the Mauthausen concentration camp. After the war, he joined the Austrian political police and was instrumental in tracking down and convicting numerous Nazi criminals. He also became the main chronicler of the camp's history, helped establish the Mauthausen Memorial Museum, and published several books.

He was long suspected of being a Soviet asset. Recently uncovered documents indicate there are grounds to believe he was responsible for helping the Soviets kidnap at least four people and illegally render them to Moscow for torture and interrogation. Provided by Wikipedia