Swiss authorities will announce Monday morning if Oscar-winning director Roman Polanski will be extradited to the United States to face child sex charges, Breaking Celebrity News has learned.

Polanski - director of such critically acclaimed films as The Pianist and Chinatown - pleaded guilty to having sex with a 13-year-old girl back in 1977 but fled to Europe before he could be sentenced.

He was arrested in Switzerland last year and has been fighting extradition to the U.S. ever since then.

Polanski's attorney, Chad Hummel, has been pushing for Polanski to be sentenced without having to return to Los Angeles, but prosecutors have been adamant that he be returned to L.A.

Swiss authorities are expected to announce their decision about whether to extradite him at 5am PT/8am ET Monday.

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Polanski, now 76, was 43 at the time he had unlawful sex with the girl.