The camp physician, Dr. Katz of Nuremberg, was also a prisoner. At first he was well treated because the guards and even the Commander admired his courageous attitude, but after he had witnessed the torture inflicted upon the prisoners, it became dangerous for the Nazis to release him. It was reported later that he had hanged himself in a detention cell—a few days before his anticipated release. His presence in the cell, however, was never explained.
Bergen-Belsen [ˈbɛʁɡn̩.bɛlsn̩], or Belsen, was a Nazi concentration camp in what is today Lower Saxony in northern Germany, southwest of the town of Bergen near Celle. Originally established as a prisoner of war camp, in 1943, parts of it became a concentration camp. Initially this was an "exchange camp", where Jewish hostages were held with the intention of exchanging them for German prisoners of war held overseas. The camp was later expanded to accommodate Jews from other concentration camps.