Prosecutors in Germany concluded that a former SS lieutenant wanted for a World War II massacre in Italy is unfit to face trial.
Gerhard Sommer, who was on top of the Simon Wiesenthal Center's list of most-wanted Nazi criminals, was deemed to have severe dementia rendering him unfit for trial.
Mr Sommer, now 93 years old, was convicted in absentia in Italy, over the killing of 560 civilians in the village of Sant'Anna di Stazzema in August 1944, as the Nazis retreated from the region.
He currently resides at a nursing home in Hamburg-Volksdorf.
Prosecutors said that if he had stool trial, he would "with high probability have been charged with 342 cases of murder, committed cruelly and on base motives".