The unnamed centenarian, who lives in Germany’s eastern state of Brandenburg, stands accused of involvement in the murder of prisoners between 1942 and 1945 at the camp.

Prosecutors believe he is fit to stand trial but the district court at Neuruppin will decide if the case will proceed.

There were more than 200,000 people held at Sachsenhausen in the town of Oranienburg between 1936 and 1945. Tens of thousands of them were systematically executed or died as a result of starvation, medical experiments or exhaustion.

Last week prosecutors charged a 95-year-old woman who was a former secretary at the Stutthof camp near Danzig, now Gdansk, over her alleged involvement in the murder of 10,000 people.

Since 1947, German courts have convicted more than 6,600 Nazi war criminals, though most were sentenced to less than a year in prison.