A 4-year-old boy died after passing out aboard Walt Disney World's "Mission: Space," a ride so intense that it has motion sickness bags and several riders have been treated for chest pain.
Daudi Bamuwamye passed out Monday afternoon on the attraction, which simulates a rocket launch and trip to Mars. The Orange County Sheriff's Office said his mother carried him off the ride and employees helped her place him on a bench.
Paramedics and a theme park worker tried to revive him, but he died at Celebration Hospital.
The sheriff's office said the boy met the minimum 44-inch height requirement for the ride at the Epcot theme park, which uses centrifugal force to simulate twice the normal force of gravity.
An autopsy was expected Tuesday to determine the cause of the boy's death.
During the ride, the mother noticed that Daudi's body was rigid and his legs were stretched straight out. She told detectives that she thought he was frightened so she took his hand.
"When the ride ended, the victim was limp and unresponsive in his seat," according to a sheriff's office report.
The $100 million ride, one of Disney World's most popular, was closed after the death but was reopened Tuesday after company engineers concluded that it was operating normally.
One other death was reported at Disney World this year. A 77-year-old woman who was in poor health from diabetes and several ministrokes died in February after going on the Pirates of the Caribbean ride at the Magic Kingdom. A medical examiner's report said her death "was not unexpected."
Disney officials said in a statement after the boy's death that they were "providing support to the family and are doing everything we can to help them during this difficult time."