FILE - This April 24, 2009 file photo shows the memorial place and the museum building of the former Nazi concentration camp in Dachau near Munich, southern Germany. German prosecutors say they are investigating a former Nazi concentration camp guard in the Berlin area on suspicion of murder after receiving a tip from the Simon Wiesenthal Center. Spokesman Martin Steltner said Friday, Dec. 13, 2013, that the 87-year-old is alleged to have been involved in killings while serving as a guard at the Dachau camp near Munich. (AP Photo/Christof Stache, File)