The Crown Prosecution Service has said that officials applied for a European arrest warrant in the Ashya King case at the request of Hampshire Police for an offence of "cruelty to a person under the age of 16 years".
In order to make that decision the CPS, working closely with Hampshire Police, reviewed the evidence available at that time in accordance with the Threshold Test of the Code for Crown Prosecutors. This is where there is not yet sufficient evidence to charge an offence but that further evidence is expected to be provided by investigators.
Ashya King's parents told the Daily Mail they fled the UK after being told NHS treatments would leave him with life-long disabilities.
The head of the police force which applied for a European Arrest warrant against the parents of Ashya King has now urged their release.
A British mother whose son's life was saved by proton therapy has told ITV that she defied NHS doctors' advice to pursue the treatment.