Carl Clauberg was put to trial in the Soviet Union and sentenced to 25 years. 7 years later, he was pardonned under the returnee arrangement between Bonn and Moscow and went back to West Germany. Upon returning he held a press conference and boasted of his scientific work at Auschwitz. After survivor groups protested, Clauberg was finally arrested in 1955 but died in August 1957, shortly before his trial should have started.