BERLIN (AP) — A 93-year-old man has been charged with 300,000 counts of accessory to murder for serving as an SS guard at the Nazis’ Auschwitz death camp, prosecutors said Monday.

Oskar Groening is accused of helping operate the death camp in occupied Poland between May and June 1944, when some 425,000 Jews from Hungary were brought there and at least 300,000 almost immediately gassed to death.