KL Auschwitz letter sent to camp and return because inmate was already murdered few days before! We find in Auschwitz archive his photo and also info about him . Koneczny, Leszek(prisoner number: 27435)born: 1925-01-30, place of birth: Sandomierz, profession: student1. 1942-03-28, Auschwitz, arrived to camp2. murdered 7.9.1942 in KL Auschwitz,. Information and photos come from archive of KL Auschwitz museum .