Klemens Stein died on 25 January 1943 at the age of 54 in camp Westerbork. He was buried in the Jewish Cemetery in Assen on 27 January 1943.
Jewish Historical Museum, Documents collection, inv.nr 3397; Death register of the Jewish community Assen
The funeral records at the Jewish cemetery in Assen reveal that Klemens Stein was buried there.