Croatian Liberation Movement was founded by Ante Pavelić in Buenos Aires in 1956. In 1957, after some people tried to kill Pavelić, he and his family moved to Spain. Pavelić died on 28 December 1959, at the German hospital in Madrid. After Pavelić's death, his son-in-law Srečko Pšeničnik took over HOP. In 1960, he moved its operations from Buenos Aires to Toronto, Canada.