JOHN TRAVOLTA and wife KELLY PRESTON were too distraught to attend the cremation service of their late son JETT, according to reports.

Sources say the couple have now flown home to Florida with the teenager's ashes after being to upset to attend the service.

The 16-year-old died following a seizure at the family's Bahamas holiday retreat on Friday.

The Pulp Fiction star and Kelly, who also have an eight-year-old daughter ELLA BLUE, left the island on Monday night with the ashes of the teenager, following his cremation.

The couple returned to their Ocala, Florida home for the first time since the teenager's death, a friend of the couple tells the Associated Press.

And an emergency worker who drove the ambulance that took Jett to hospital has revealed Travolta hugged the teenager's body and wept, "I'm sorry, Jett" when he was told his son was dead.

Medic Tarino Lightbourn says, "I think he meant, 'I'm sorry, Jett. I did all I could do.' He was crying, eyes red. I remember him looking up at the ceiling and saying 'God please help me!'

"John himself was participating in the CPR on the way to the hospital. John himself went behind the curtain, tears in his eyes. I could see the love in his eyes. When he was hugging his son he said 'I'm sorry Jett'."

Pathologists conducting Monday's autopsy have yet to comment on the official cause of death, but an undertaker who has seen the death certificate revealed experts concluded the youngster died from a "seizure".