Germany's highest court says it has received an appeal from John Demjanjuk's lawyer seeking to block the 89-year-old's trial.

However, the Federal Constitutional Court did not say Monday when it might rule on the request to halt the trial, which is scheduled to open in Munich on Nov. 30.

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Prosecutors have charged the retired auto worker with being an accessory to the murder of thousands at the Sobibor death camp in Nazi-occupied Poland.

Lawyer Ulrich Busch said last week he would seek to halt the trial. He has cited health concerns among other issues.

The Ukrainian-born Demjanjuk was deported from the United States in May. He maintains that he was a Red Army soldier who was held as a prisoner of war and never hurt anyone.