The prisoner’s reason for arrest was noted on the personal effects storage room questionnaire: so-called preventive custody, protective custody, instructive custody, return to protective custody, homosexuality (punishable according to Paragraph 175), Jehovah’s Witness (known as “Bible Students” at the time), returning Bible Student, work shirker, Jew, race defiler or deportation custody. Prisoners in deportation custody (Ausweisungshäftlinge, often abbreviated as AH or AuswH.) were usually non-Jews who were not German citizens or were stateless. Based on a decree issued by Heinrich Himmler in 1937, their imprisonment in a concentration camp was supposed to put pressure on them to emigrate from Germany.