SALT LAKE CITY (AP) — The 12-year-old boy under a court order to receive chemotherapy for cancer was in remission Thursday, said a spokesman for the parents, who have been charged with kidnapping for taking the boy from Utah to avoid the treatment.

Utah authorities insist the boy still is vulnerable.

Daren and Barbara Jensen of suburban Salt Lake City have been charged with kidnapping for taking their son, Parker, out of Utah to avoid a juvenile-court order to give him chemotherapy.

The 38-year-old father, who was released on bail after a weekend arrest in Idaho, was staying Thursday at the home of his wife's parents in Pocatello, said his lawyer. His wife and the boy, however, are still missing.

Daren Jensen is considered a fugitive in every state but Idaho and "is not going anywhere," said the lawyer, Keith Zollinger.

The family insists chemotherapy is unnecessary and will only stunt Parker's growth and leave him sterile.

Daren Jensen and his Utah lawyer, Blake Nakamura, did not return messages from The Associated Press seeking comment.

A man who answered the phone at the home of Barbara Jensen's father, Henry West, refused to identify himself but said he was speaking for the family, saying their boy was "alive and well" and testing negative for cancer cells.

Assistant Utah attorney general Susan Eisenman said a gag order prevents her from talking about the case. Instead, she faxed The Associated Press an 18-page study published in the February edition of The New England Journal of Medicine.

The study says that chemotherapy is needed to fully eradicate Ewing's sarcoma after surgery and prevent remnant cells too few to be detected from growing into new tumors.