Gomułka resumed his communist and labor conspiratorial activities and kept advancing within the KPP organization until, as the secretary of the Party's Silesian branch, he was arrested in Chorzów in April 1936. He was then tried by the District Court in Katowice and sentenced to seven years in prison where he remained jailed until the beginning of World War II. Ironically, this internment most likely saved Gomułka's life, because the majority of the KPP leadership would be murdered in the Soviet Union in the late 1930s, caught up in the Great Purge under Joseph Stalin's orders.