The NHS trust in charge of the Southampton hospital where 5-year-old Ashya King was a patient, have released a statement after the boy was found with his family in Spain.
"Our priority has always been Ashya's welfare and we are delighted that he has been found. We are now working closely with colleagues in Malaga to ensure he receives the essential medical support he needs.
"We are aware of the comments made online by his father. Throughout Ashya's admission we have had conversations about the treatment options available to him and we had offered the family access to a second opinion, as well as assistance with organising treatment abroad.
"We understand how distressing this situation is for everyone involved, particularly Ashya's family. We will continue to do what we can to support them and assist the police in providing any information they require."
Hampshire Police has said Ashya King should be re-united with his parents at a "difficult and scary" time for him during his treatment.
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.
The parents of Ashya King said they took him out of a hospital to seek proton beam treatment which is not available under the NHS.