Prosecutors say the man, whose name was not released, helped kill 3,518 people held in the Sachsenhausen camp north of Berlin.
A German court on Tuesday sentenced a former SS guard, now 101, to five years in prison for aiding and abetting the killing of about 3,500 people at the Sachsenhausen concentration camp, ending one of the last Nazi trials in Germany.
Prosecutors say the man, whose name was not released, helped kill 3,518 people held in the Sachsenhausen camp north of Berlin.
The man was a guard from 1942 to 1945, according to Reuters.
The trial lasted almost nine months, because doctors considered that the accused was partially fit to stand trial and so the trials lasted only two to two and a half hours a day.
Many of the detainees in Sachsenhausen were killed with Zyklon-B, the poison gas used in other extermination camps, where millions of Jews lost their lives during the Holocaust.
Sachsenhausen was occupied mainly by political prisoners from all over Europe, along with Soviet prisoners of war and some Jews.
In recent years, a number of indictments have been leveled against former concentration camp guards for crimes against humanity in World War II.
In September, a former camp secretary escaped the day her trial was due to begin, but was arrested by police a few hours later.
A 2011 court ruling paved the way for these prosecutions, and even those who indirectly contributed to wartime killings without triggering a warrant or order could be held criminally liable.
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