Priebke, 84, was sentenced in July to five years in jail for his role in the World War II massacre of 335 Italian men and boys at the Ardeatine Caves south of Rome. About 75 of the victims were Jews.

It was not exactly clear just how long Priebke has yet to serve. His sentence is being reduced because of time served during his trial and because of his pre-trial detention after he was extradited to Italy from Argentina in November 1995.