Nazis who died by suicide in prison custody

Kurt Gerstein (11 August 1905 – 25 July 1945) was a German SS officer and head of technical disinfection services of the Hygiene-Institut der Waffen-SS (Institute for Hygiene of the Waffen-SS). After witnessing mass murders in the Belzec and Treblinka Nazi extermination camps, Gerstein gave a detailed report to Swedish diplomat Göran von Otter, as well as to Swiss diplomats, members of the Roman Catholic Church with contacts to Pope Pius XII, and to the Dutch government-in-exile, in an effort to inform the international community about the Holocaust as it was happening. In 1945, following his surrender, he wrote the Gerstein Report covering his experience of the Holocaust. He died of an alleged suicide while in French custody.

Leonardo Conti (German pronunciation: [ˈleːonaʁdo ˈkɔnti]; 24 August 1900 – 6 October 1945) was the Reich Health Leader and an SS-Obergruppenführer in Nazi Germany. He was involved in the planning and execution of Action T4 that murdered hundreds of thousands of adults and children with severe mental and physical handicaps. On 19 May 1945, after Germany's surrender, Conti was imprisoned and in October hanged himself to avoid trial.