The Department of Justice wants to revoke the citizenship of an 86-year-old Seattle-area man, claiming he participated in a Nazi SS mobile death squad unit operating in Serbia during World War II. Prosecutors say Peter Egner was a guard in an Einsatzgruppe unit responsible for the deaths of more than 6,000 Jewish women and children at Semlin concentration camp near Belgrade.

Egner admitted serving as a guard at the camp during an interview with federal authorities in 2007. On his application for naturalization, filed in 1965, Egner claimed he was an infantry sergeant in the German army; he omitted his SS service, prosecutors say. They seek the immediate deportation of Egner, who is living in a retirement home in Bellevue