The Nazi war criminal who invented the mobile gas chamber and used it to murder thousands of Jews was recruited by West German intelligence after World War II and tried unsuccessfully to spy on Cuba's revolutionary leader, Fidel Castro, new documents have revealed.
The disclosures concern Walter Rauff, a senior SS official who headed a Nazi research group which developed mobile gas chambers run on car exhaust fumes that were used at concentration camps throughout Germany and Nazi-occupied Poland and Ukraine during the Holocaust.
Rauff, who was wanted for more than 90,000 murders, was hired by West Germany's newly created BND intelligence service in 1958, even though its officials were apparently aware of his war crimes.
"His recruitment was in no way politically or morally defensible," Bodo Hechelhammer, the head of the BND's history research group, told Der Spiegel magazine.
The revelations about Rauff are contained in hitherto unpublished BND archive documents, which the agency is researching with the help of historians in an attempt to provide an accurate assessment of its murky past.