After the liberation of Norway in May 1945, the prison was used for Norwegians tried or convicted of treason or collaboration, as a part of the legal purge in Norway after World War II. Since the name "Grini" was now associated with the Norwegian resistance movement, hence seen as heroic, the camp was renamed Ilebu. The new name also reflected the actual location of the camp better. 3,440 people were imprisoned here in July 1945. The conditions in the camp were unhealthy, with beri-beri breaking out in the summer. A guard reported that punitive exercise was used in a harsh way. On 13 October 1945 the National Mobile Police Service conducted a "razzia" (police raid). During the "razzia", prosecutor Lauritz Jenssen Dorenfeldt and the wife of camp commandant Helge Gleditsch were wrongly rounded up in the yard.