BERLIN (AP) — Prosecutors in Germany said Monday they have shelved their investigation of 17 former German SS soldiers who were part of a unit involved in a Nazi wartime massacre of more than 500 civilians in Italy, because of a lack of evidence.

The decision brings to a close a decade-long investigation of the former members of the 16th SS-Panzergrenadier Division "Reichsfuehrer SS," eight of whom are still alive, on allegations they were involved in the Aug. 12, 1944, killings in the Tuscan village of Sant'Anna di Stazzema.

The SS unit descended upon the village that morning ostensibly to hunt for partisans, but instead rounded up and shot villagers, according to survivors. Others were herded into basements and other enclosed spaces and killed with hand grenades....