That criminal court will decide on the legality of the American request for Polanski's apprehension, Swiss Justice Ministry spokesman Guido Balmer told The Associated Press on Tuesday. He noted that the Justice Ministry and Polanski could later seek to overturn any decision at the Federal Tribunal, Switzerland's highest court.
"We will examine the ruling and then decide what we will do," Balmer said, declining to speculate on if or when Polanski could get out of jail.
The motion filed by the director's newly hired Swiss lawyers for his release was accompanied by proposals for bail and "guarantees," Polanski's French lawyer Herve Temime said. He would not elaborate on those, but added that house arrest at the directors' Swiss chalet in Gstaad was one option.
"Our first concern, and principle concern, is that Mr. Polanski be set free" from jail while "remaining on Swiss territory," Temime told reporters at the Justice Palace in Paris. "He has a chalet in Switzerland. He would naturally accept to be placed under house arrest during the followup of the extradition proceedings."
The Swiss Justice Ministry did not rule out the possibility that Polanski could be released on bail under very strict conditions that he doesn't flee Switzerland, but said house arrest had never happened before in a case like this.
"In most cases the imprisoned person has to remain in detention for the whole process," said Peter Cosandey, a former Zurich prosecutor specializing in international criminal cooperation.
"The chances that he will be exempted from prison are rather small," he added, because Polanski isn't a Swiss citizen or a permanent resident and is considered at high risk of fleeing justice.
Polanski, director of "Chinatown," "Rosemary's Baby" and the Oscar-winning "The Pianist" was arrested Saturday as he arrived in Zurich to receive a lifetime achievement award from a film festival.
Authorities in Los Angeles consider Polanski a convicted felon and fugitive, and a Swiss justice official said there has been an international arrest warrant out on him since 2005.
The director had pleaded guilty to unlawful sexual intercourse in 1977 with a 13-year-old girl. He was sent to prison for 42 days, but the judge tried to renege on the plea bargain. On the day of his sentencing in 1978, aware the judge would sentence him to more prison time, Polanski fled to France.
Under Swiss law, the United States has 60 days to file a formal extradition request. That is first examined by the Swiss Justice Ministry, and once approved, it can be appealed at a number of courts.
Although the director, who lives in France, often stayed in Gstaad and traveled widely through France, Germany and other European nations, a Swiss official said this was the first time that law enforcement authorities had solid information from the United States so they could make an arrest.
"Last week, we received precise information when and where he would arrive, enabling us to make the arrest. That was the first time," Balmer said.
Polanski's agent, Jeff Berg, appearing Tuesday on NBC's "Today" show, said the filmmaker was "looking forward to getting this resolved." He said he did not understand why such a long-standing case was being pursued now.
"His lawyers were advised that extradition was not being sought in the past. I'm not sure why this has presented itself today," Berg said.
A dual citizen of France and Poland, Polanski has been the focus of an international tug-of-war. The French and Polish foreign ministers have pressed the Swiss to free him on bail, and contacted U.S. officials all the way up to U.S. Secretary of State Hillary Rodham Clinton so see if U.S. justice officials could drop the case.
French officials in particular have been horrified by U.S. and Swiss actions, with the French culture minister saying the director had been "thrown to the lions."
The arrest has left Polanski's latest film - "The Ghost" - in limbo, with several months of work before the political thriller is ready for theaters.
Polanski's agent Jeff Berg said the director had completed much of the editing but the film still needed music scoring and sound mixing. Based on the novel by Robert Harris, "The Ghost" stars Pierce Brosnan as a fictional British leader and Ewan McGregor as a ghostwriter for his memoirs. The movie was filmed in Germany.
For now, Polanski is living in a Zurich cell where he receives three meals a day and gets one hour of daily exercise outside. Family and friends can only see him for an hour each week but he is allowed numerous visits from lawyers and consular diplomats. Since his arrest, he has seen his wife, French actress Emmanuelle Seigner.
The Justice Ministry has insisted that politics played no role in the arrest, which was prompted by a request from the U.S. Marshals Southwest Regional Fugitive Task Force, which includes the Los Angeles Police Department. The departments of State and Justice had to sign off on the request before it was sent.
Polanski has asked a U.S. appeals court in California to overturn a judges' refusal to throw out his case. He claims misconduct by the now-deceased judge who had arranged a plea bargain and then reneged on it.
An HBO documentary, "Roman Polanski: Wanted and Desired," has suggested there was behind-the-scenes manipulations by a now-retired prosecutor not assigned to the case.
His victim, Samantha Geimer, who long ago identified herself, has joined in Polanski's bid for dismissal, saying she wants the case to be over. She sued Polanski and reached an undisclosed settlement.
Earlier this year, Superior Court Judge Peter Espinoza in Los Angeles dismissed Polanski's bid to throw out the case because the director failed to appear in court, but said there was "substantial misconduct" in the handling of the original case.
A native of France who was taken to Poland by his parents, Polanski escaped Krakow's Jewish ghetto as a child during World War II and lived off the charity of strangers. His mother died at the Nazis' Auschwitz death camp.
Polanski has lived for the past three decades in France, where his career has continued to flourish; he received a directing Oscar in absentia for the 2002 movie "The Pianist." He and Seigner have two children.