By mid-July Wiesenthal and other Jewish residents had to register to do forced labour. Within six months, in November 1941 the Nazis had set up the Lwów Ghetto using Jewish forced labour. All Jews had to give up their homes and move there, a process completed in the following months. Several thousand Jews were murdered in Lvov by Ukrainian nationals and German "Einsatzgruppen" in June and July 1941. In his autobiographies, Wiesenthal tells how he was arrested on 6 July, but saved from execution by his former foreman, a man named Bodnar, who was now a member of the Ukrainian Auxiliary Police. There are several versions of the story, which may be apocryphal.