 He was now taken to in the underground NKVD prisoner of war holding centre in what had previously been the cellar for keeping the bodies of dead animals cool at the former Veterinary Medicine Institute in central Berlin.On 21 September 1945 he was moved to "more appropriate" accommodation in Special Internment Camp 3 at Berlin-Hohenschönhausen.Now, however, Sibylle Boden-Gerstner (as she had become) was able to deliver to the Soviet district commander 23 written statements from friends and former Resistance activists whom Karl-Heinz and Sibylle had known during their time in Paris.