A funeral home official said Jett Travolta death certificate lists "seizure" as cause of death.

Travolta Thanks Fans For Support

The 16-year-old son of actors John Travolta and Kelly Preston was found dead Friday at his family's vacation home in Freeport.

Reports Friday indicated that Jett Travolta had a history of seizures, which may have been a contributing factor in his death.

Travolta's lawyers, Michael Ossi and Michael McDermott, told TMZ.com that the seizures the boy suffered were "frequent and extremely serious." They told the celebrity gossip site that "each seizure was like a death," with Jett losing consciousness and convulsing.

TMZ also reported that to treat the seizures, Jett Travolta previously took Depakote, which the site described as "a strong anti-seizure medication."

The site said that reports that John Travolta refused to give his son anti-seizure meds because of his Scientology beliefs were not true.

The police superintendent in the Bahamas has said a caretaker found Jett Travolta unconscious in a bathroom Friday morning. The teen was later pronounced dead at a Freeport hospital.

In a statement, the superintendent also said Jett had last been seen entering the bathroom Thursday.

McDermott, however, said that leaves "the impression that the boy was unsupervised."

The attorney also said he doesn't believe that Jett was in the bathroom for a substantial amount of time. McDermott said that there were two nannies with the teen for the entire evening and that Jett Travolta "was spectacularly supervised" by them.

McDermott said that John Travolta is working to finish funeral arrangements and hopes to fly his son's body to Florida by midweek. Travolta and Preston, his wife of 17 years, have a home in Ocala.

The couple released a statement Sunday to thank supporters for their condolences.

"Jett was the most wonderful son that two parents could ever ask for and lit up the lives of everyone he encountered. We are heartbroken that our time with him was so brief," they said in the statement. "We will cherish the time we had with him for the rest of our lives.

"We have received many messages of condolence from around the world and we want to thank everyone for their prayers and support," the statement added. "It has meant so much to us. It is a beautiful reminder of the inherent goodness in the human spirit that gives us a hope for a brighter future."

Jett Travolta was the oldest child of John Travolta and Preston. They also have an 8-year-old daughter, Ella.

Preston has said that Jett Travolta became very sick when he was 2 years old and was diagnosed with Kawasaki disease, an illness that leads to inflammation of the blood vessels in young children. She blamed household cleaners and fertilizers.

According to People magazine, she said that a detoxification program based on teachings from the Church of Scientology helped improve his health.