 Some ships carrying Jewish refugees were turned back towards Europe, although in one instance, about 2,000 Jews who were fleeing Europe by sea were detained in a camp in Mauritius, and were given the option of emigrating to Palestine after the war.The British also stopped all attempts by Palestinian Jews to bribe the Nazis into freeing European Jews.At the time that The Holocaust became known to the Allies, there were 34,000 Jewish immigration certificates for Palestine remaining.