Switzerland has decided not to extradite Oscar-winning film director Roman Polanski to the US to face sentencing for a case dating back to 1977. <br/><br/>Polanski pleaded guilty in Los Angeles, California to having unlawful sex with a 13-year-old girl in 1977 but fled to Europe before he was sentenced. Polanski, 76, has been under house arrest in his Swiss chalet since December 2009.<br/><br/>Swiss Justice Minister Eveline Widmer-Schlumpf today said the restrictions on his liberty have been lifted and he is free now. She said U.S. prosecutors cannot apply again to Switzerland to have Polanski sent there but could apply to other countries to detain and extradite him.