The motion alleges that a documentary about filmmaker released earlier this year revealed "a pattern of misconduct and improper communications" between the district attorney's office and the judge in Polanski's case.
Poland-born Polanski, 75, has been living in France in self-imposed exile from the United States since fleeing in 1978 after pleading guilty to having sex with a 13-year-old girl in Los Angeles. He was initially indicted on six felony counts and faced up to life in prison. Instead, he pleaded guilty to one count of unlawful sexual intercourse with a minor and five other counts were dismissed.
A hearing on the matter is scheduled for Jan. 21 in Los Angeles County Superior Court.