A Pittsburgh resident is facing removal proceedings, the Department of Justice announced Friday. Anoton Geiser, a former Nazi who served as an SS guard at two concentration camps in Germany during World War II, allegedly worked as an armed SS Death's Head guard at the Sachsenhausen Concentration Camp near Berlin, Germany.

Geiser, 84, has resided in the United States since 1956 following immigration from Austria. He became a U.S. citizen in March 1962. His citizenship was revoked in 2006, when it was discovered that he served in Nazi Germany, making it illegal for him to enter the United States.

Geiser's duties reportedly included escorting prisoners to slave labor sites and standing guard from the camp's watchtowers; and he was allegedly under orders to shoot any prisoner attempting escape. During the period Geiser served at Sachsenahausen, over 3,000 prisoners were murdered or died following brutal treatment.

In addition, the court document charges that Geiser guarded prisoners as they were transported from Buchenwald to Arolsen and as they were evacuated from Arolsen as Allied forces approached.

Through his service as a Nazi concentration camp guard, Anton Geiser helped subject thousands of innocent civilians to inhumane and frequently lethal treatment, said Acting Assistant Attorney General Rita M. Glavin of the Criminal Division. The United States will not provide a safe haven for such individuals.

The Office of Special Investigations remains unswervingly committed to identifying perpetrators of human rights violations and having them removed from the United States, said Eli M. Rosenbaum, director of OSI.

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