Prosecutors in Munich appealed John Demjanjuk's five-year prison sentence for war crime's and a judge's ruling to set him free pending appeal, AP reported Monday quoting the prosecutors' spokeswoman.
The 91-year-old former autoworker was convicted last week on 27,900 counts of being an accessory to murder after the court determined that he served as a guard at the Sobibor death camp run by the Nazis.
The Munich state court ordered his release from prison after convicting him of the crimes, saying that he posed no flight risk.
However, the Munich prosecutors' spokeswoman, Barbara Stockinger, said her office had appealed his release, arguing that there was a risk he could still flee.
She noted that even without a passport, Demjanjuk could still travel inside Europe's so-called "Schengen zone" which has no regular border controls.