John Travolta's 16 years old son Jett died.

The report says Jett Travolta had a seizure while vacationing in Bahamas with family. The family had just arrived in the Bahamas on Tuesday for a New Year's vacation. He was only 16 years old. Jett was the oldest child of John Travolta and Kelly Preston, and had a history of suffering from Kawasaki Disease as a child. As many as 15 to 25 percent of the children who suffered Kawasaki disease can be damaged the coronary arteries or the heart muscle itself.
In which could cause a blood clot at weakened area and block the artery, sometimes leading to a heart attack.

An autopsy for Jett is scheduled on Monday, and foul play is not suspected.