Pocatello, Idaho ? A Utah man who took his son to Idaho to avoid a court order to give the boy chemotherapy for cancer was ordered Wednesday not to leave the state while he fights extradition on a kidnapping charge.

At an extradition hearing, Daren Jensen’s lawyer told a judge Jensen would fight efforts to return him to Utah. The judge ordered him to stay in Idaho and submit to supervision by probation officers as the extradition case proceeds.

Jensen and his wife, Barbara, of suburban Salt Lake City, fled Utah with their 12-year-old son, Parker, after the state ordered chemotherapy for the boy, who had a cancerous tumor removed from his mouth.

Doctors in Utah have testified Parker has only a 5 percent chance of living without chemotherapy. With chemotherapy, he would have a 72 percent chance of being alive after five years.

The family says the boy is in remission, and chemotherapy would only stunt his growth and leave him sterile.

The 38-year-old father, who was released on bail after being arrested two weeks ago in Idaho, is staying at the home of his wife’s parents in Pocatello. His wife and the boy are missing.

Jensen’s father, Robert Jensen, 66, said the Jensens had planned to take the boy to Houston for a clinical trial for antineoplaston therapy, an alternative treatment the American Cancer Society says has not been proven effective.