Tiso lost all remnants of power when the Soviet Army conquered the last parts of western Slovakia in April 1945. He fled first to Austria, then to a Capuchin monastery in Altötting, Bavaria. In June 1945, he was arrested by the Americans and extradited to the reconstituted Czechoslovakia to stand trial in October 1945. On 15 April 1947, the Czechoslovak National Court (Národný súd) found him guilty of many (but not all) of the allegations against him, and sentenced him to death for "state treason, betrayal of the antifascist partisan insurrection and collaboration with Nazism".