In 1944 Morel became warden of the Soviet NKVD prison at Lublin Castle. During most of 1945 he was commander of the Zgoda labour camp in Świętochłowice, Poland. In 1949 he was made commander of Jaworzno concentration camp and remained a commandant of numerous concentration camps until they were all closed down in 1956 following the Polish October. He then worked as head of a prison in Katowice and was promoted to the rank colonel in the political police, the MBP. He was dismissed during the 1968 Polish political crisis which saw the purging of ex-Stalinists.