A court hearing in Spain to decide whether to extradite the parents of Ashya King back to Britain, has been adjourned until tomorrow.
Brett and Naghmeh King took the 5-year-old, who has a brain tumour, out of hospital in Southampton on Thursday without doctors' consent.
The parents claim they wanted him to get a treatment that was denied on the NHS.
Mr and Mrs King were taken to appear in court in Madrid, while Ashya is receiving treatment in a children's hospital in Malaga. However, the extradition hearing will not take place until tomorrow.
Hampshire's Police and Crime Commissioner, Simon Hayes, said there's no suggestion Ashya's parents will be jailed and the ethical questions surrounding the case can be asked after he's returned to the UK for treatment.
Ashya's grandmother Patricia King said authorities were treating Brett and his wife "like murderers".
She said: "They've treated them like murderers, putting handcuffs on them and everything. There's no human rights for our family at all, it's disgusting.
"He's there in the hospital, he doesn't know anybody, there's police guarding him, he can't speak, he doesn't understand Spanish.
"My daughter-in-law and my son have begged to see him, but they've been refused."
His brother, Naveed, 20, posted a video blog claiming the family had stocked up on food and syringes that the boy needed ahead of their journey and had bought him a new wheelchair costing up to £1,600.