The man, identified only as Josef S, was a guard at the Sachsenhausen death camp between 1942 and 1945 is is accused of knowingly and willingly assisting in the murder of 3,518 people at the camp.
A 100-year-old former Nazi concentration camp guard, the oldest person charged with complicity in the murder of thousands of detainees, told a German court on Friday that he was not guilty.