An immigration judge on Wednesday ordered John Demjanjuk, a retired autoworker accused of being a Nazi concentration camp guard, deported to his native Ukraine, but the 30-year legal battle still may not be over.

Mr. Demjanjuk, 85, has been fighting to stay in this country since the 1970's.

The United States first tried to deport him in 1977. Mistakenly suspected of being a guard known as Ivan the Terrible at the Treblinka concentration camp, he was extradited to Israel, where he was sentenced to be hanged.

But the Israeli Supreme Court determined that Ivan had been someone else.

Mr. Demjanjuk lost his United States citizenship in 2002 after a judge ruled that documents from World War II proved he was a Nazi guard at various death or forced labor camps.

The judge who ordered Mr. Demjanjuk deported, Chief Immigration Judge Michael J. Creppy, ruled that there was no evidence to substantiate Mr. Demjanjuk's assertion that he would be tortured if deported to his homeland. Judge Creppy also said that if Ukraine refused to accept Mr. Demjanjuk, he should then be deported to Germany or Poland.