Ernst Kaltenbrunner (4 October 1903 – 16 October 1946) was a high-ranking Austrian SS official during the Nazi era and a major perpetrator of the Holocaust. After the assassination of Reinhard Heydrich in 1942, and a brief period under Heinrich Himmler, Kaltenbrunner was the third Chief of the Reich Security Main Office (RSHA), which included the offices of Gestapo, Kripo and SD, from January 1943 until the end of World War II in Europe.