CHICAGO (AP) — A federal immigration judge ordered an 87-year-old retired carpenter deported to Ukraine for taking part in a police organization that helped the Nazis round up Ukrainian Jews during World War II, authorities said Thursday.

Judge Robert Vinikoor wrote in a five-page ruling that Osyp Firishchak took part in Nazi activities and participated in "conduct contrary to civilization and human decency" as a member of the Ukrainian Auxiliary Police, according to a statement from the U.S. Department of Justice.

Firishchak, who came to the United States in 1949 and settled in Chicago, was stripped of his U.S. citizenship in 2005 after a three-day civil trial. At that trial, Firishchak denied he was ever a member of the Ukrainian Auxiliary Police or that he collaborated with the Nazis. He claimed he was homeless and looking for work in Lviv during the years in question.