BERLIN – A top commander of a Nazi SS-led unit accused of burning villages filled with women and children lied to American immigration officiaHigh0rls to get into the United States and has been living in Minnesota since shortly after World War II, according to evidence uncovered by The Associated Press.

Michael Karkoc, 94, told American authorities in 1949 that he had performed no military service during World War II, concealing his work as an officer and founding member of the SS-led Ukrainian Self Defense Legion and later as an officer in the SS Galician Division, according to records obtained by the AP through a Freedom of Information Act request.

The Galician Division and a Ukrainian nationalist organization he served in were both on a secret American government blacklist of organizations whose members were forbidden from entering the United States at the time.

Though records do not show that Karkoc had a direct hand in war crimes, statements from men in his unit and other documentation confirm the Ukrainian company he commanded massacred civilians, and suggest that Karkoc was at the scene of these atrocities as the company leader.

Nazi SS files say he and his unit were also involved in the 1944 Warsaw Uprising, in which the Nazis brutally suppressed a Polish rebellion against German occupation.

Polish prosecutors announced Friday after the release of the AP investigation that they will investigate Karkoc and provide “every possible assistance” to the U.S. Department of Justice, which has used lies in immigration papers to deport dozens of suspected Nazi war criminals. The AP evidence of Karkoc’s wartime activities has also prompted German authorities to express interest in exploring whether there is enough to prosecute.

Karkoc refused to discuss his wartime past at his home in Minneapolis, and repeated efforts to set up an interview, using his son as an intermediary, were unsuccessful.

Efraim Zuroff, the lead Nazi hunter at the Simon Wiesenthal Center in Jerusalem, said that based on his decades of experience pursuing Nazi war criminals, he expects that the evidence showing Karkoc lied to American officials and that his unit carried out atrocities is strong enough for deportation and war-crimes prosecution in Germany or Poland.

The deputy head of the German office that investigates Nazi war crimes, Thomas Will, said that based on the AP’s evidence, he is interested in gathering information that could possibly result in prosecution.

Karkoc now lives in a modest house in northeast Minneapolis in an area with a significant Ukrainian population. He came to the door but would not comment on his wartime service for Nazi Germany. “I don’t think I can explain,” he said.

Members of his unit and other witnesses have told stories of brutal attacks on civilians.

One of Karkoc’s men, Vasyl Malazhenski, told Soviet investigators that in 1944 the unit was directed to “liquidate all the residents” of the village of Chlaniow, Poland, in a reprisal attack for the killing of a German SS officer, though he did not say who gave the order.

In a background check by U.S. officials on April 14, 1949, Karkoc said he had never performed any military service, telling investigators that he “worked for father until 1944. Worked in labor camp from 1944 until 1945.”

However, in a Ukrainian-language memoir published in 1995, Karkoc says that he helped found the Ukrainian Self Defense Legion in 1943 in collaboration with the Nazis’ feared SS intelligence agency, the SD, to fight on the side of Germany — and served as a company commander in the unit, which received orders directly from the SS, through the end of the war. The AP located a copy online in an electronic Ukrainian library.

Karkoc’s name surfaced when a retired clinical pharmacologist who took up Nazi war crimes research in his free time came across it while looking into members of the SS Galician Division who emigrated to Britain. Stephen Ankier, who is based in London, tipped off AP when an Internet search showed an address for Karkoc in Minnesota.

The AP located Karkoc’s U.S. Army intelligence file, and got it declassified by the National Archives in Maryland through a FOIA request. The file said standard background checks found no red flags that would disqualify him from entering the United States but noted that key information from the Soviet side was missing.

Wartime documents located by the AP also confirm Karkoc’s membership in the Self Defense Legion. They include a Nazi payroll sheet found in Polish archives, signed by an SS officer on Jan. 8, 1945 — only four months before the war’s end — confirming that Karkoc was present in Krakow, Poland, to collect his salary as a member of the Self Defense Legion. Karkoc signed the document.