LONDON - British police said they were working with their French counterparts on Friday to find a five-year-old boy with a brain tumour who was taken away from hospital by his parents.
Ashya King's parents took him from a hospital in Southampton, southern England, on Thursday without doctors' consent and boarded a ferry to the French port of Cherbourg the same day, a police spokesman said.
The spokesman said the boy's life was at "substantial risk" as he needed constant medical care following recent surgery, adding that he was likely in a wheelchair or buggy as he cannot move.
"We are working with our counterparts in France to activate their emergency child rescue alert procedures," he said.
Ashya's brother Naveed King on his profile on the photo blogging platform Instagram describes himself as a Jehovah's Witness.
Jehovah's Witnesses refuse blood transfusions on religious grounds but are open to other medical procedures.
It was unclear what motivated the parents to take their son away.