Gov. Rod Blagojevich's defense attorneys have asked a federal judge to throw U.S. Attorney Patrick Fitzgerald and all of his assistants off the fraud and bribery case against him.

Chief defense counsel Edward Genson said in a motion Thursday that the news conference Fitzgerald held in announcing the charges was so filled with prejudicial publicity that the prosecutor should bow out.

The full text of the motion wasn't immediately available because it had been filed under seal. But it was described by U.S. District Court Chief Judge James Holderman, who ordered it unsealed, and Blagojevich attorney Sheldon Sorosky.

Fitzgerald spokesman Randall Samborn had no immediately comment.