The filmmaker faces a US arrest warrant for his conviction of unlawful sex with a 13-year-old girl. The court has ruled that he must return from Switzerland to California for sentencing.
Last week, an appeals court dismissed Polanski's request to have a special counsel review his case.
According to The Hollywood Reporter, the Swiss government said that it is studying the ruling before making a decision on the extradition.
The Ghost Writer director is currently under house arrest in Gstaad.