Momcilo Djujic, 92, one of the top leaders of World War II anti-Nazi, anti-communist Serbian troops known as Chetniks, died Sept. 11 in Los Angeles. The cause of death was not disclosed.

He became a wartime Serb leader when Nazis invaded the former Yugoslavia in 1941. He led his units in what is today central and southern Croatia, where he fought against the Germans, pro-Nazi Croats and the communist-led guerrillas supported by the Soviets.

In 1945, Mr. Djujic was wanted by the triumphant communist guerrillas led by Josip Broz Tito, but managed to escape to the United States. Under Tito's 35-year rule, Mr. Djujic was banned from returning to the country, and the U.S. government consistently rejected extradition claims from Belgrade, which sought him as an alleged war criminal.

In Chicago, Mr. Djujic was a prominent activist of the Serb anti-communists known as DemigrDes and later moved to Southern California.

Mr. Djujic advocated restarting the monarchy in Yugoslavia and abolishing the communist regime established after the war.

His original training was as a priest. He attended a Serb Orthodox seminary in northern Serbia.

At the outset of the war, he became a leader of the Serb Chetniks. His followers were mostly ethnic Serbs in Croatia who were fleeing prosecution and death camps run by members of the Ustashas regime, the World War II-era Nazi puppet regime of Croat nationalists.

Unlike many other World War II Chetniks executed by Tito's troops after the war, Mr. Djujic fled to Italy and later to Chicago. In 1948 he founded the Ravna Gora movement that gathered Serb DemigrDes, mostly political exiles. Tito's government declared him a war criminal in 1947.

He also edited the publication "Srbija" (Serbia) by DemigrDes in Canada.

After Croatia seceded from Yugoslavia in 1991 and tried to reestablish Ustashas, it demanded Mr. Djujic's extradition for alleged war crimes against Croats.