A German federal court has upheld the conviction of Auschwitz death camp guard Oskar Groening, who admitted witnessing murders but not taking part.

The verdict overturns a 1969 ruling that being a staff member at Auschwitz was not enough to secure a conviction.

Nazi hunter Efraim Zuroff said it was the biggest change in years.

Groening, 95, who was known as “the bookkeeper of Auschwitz”, had appealed against a four-year jail term handed down for being accessory to murder.