A 94-year-old former enlisted SS man has gone on trial in Germany, charged with being an accessory to murder for crimes committed during the years he served as a guard at the Nazis’ Stutthof concentration camp.

Johann Rehbogen is accused of working as a guard at the camp east of Danzig, nowadays the Polish city of Gdansk, from June 1942 to September 1944.

More than 60,000 people were killed at Stutthof and prosecutors argue that as a guard, he was an accessory to at least hundreds of those deaths.

Stutthof prisoners were killed in a gas chamber, with deadly injections of petrol or phenol directly to their hearts or shot, starved and even forced outside in winter without clothes until they died of exposure, prosecutor Andreas Brendel said.

Rehbogen does not deny serving in the camp during the war but says he was not aware of the killings, Brendel said.

Rehbogen’s attorney, Andreas Tinkl, has said his client will make a statement in the trial at the Munster state court, which is scheduled to last until January, but it was not immediately clear when he would speak.

In deference to his age and health, the trial is being restricted to a maximum of two hours a day, with no more than two non-consecutive days a week.