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.