BERLIN — German authorities have arrested a 93-year-old man on suspicion of “multiple counts” of accessory to murder while he was an SS guard in the Auschwitz death camp.

Schwerin prosecutors’ spokesman Stefan Urbanek said Tuesday that a doctor examined the man after his arrest Monday and determined he was in good enough health to be held in custody while authorities investigate further.

His was the latest arrest in nationwide investigations of 30 former Auschwitz guard suspects identified by special federal prosecutors last year.

The suspect, whose name Urbanek refused to give, citing German privacy rules, is accused of being an SS medic who served in the Auschwitz-Birkenau death camp in September 1944. That’s a time when prosecutors say more than 1,700 people were sent to the camp’s gas chambers.