A 16-year-old British girl was in critical condition Tuesday after her heart stopped following a Disney World (search) thrill ride, one month after a young boy died after going on another attraction.

Leanne Deacon had said she felt strange but was OK after leaving Disney World-MGM Studios' "The Twilight Zone Tower of Terror (search)," said Jim Solomons, an Orange County Sheriff's Office spokesman.

However, the girl's condition deteriorated rapidly and she was in critical condition Tuesday night, a hospital spokeswoman said.

No other passengers had complained of injuries on the Tower of Terror, which depicts a haunted hotel in which riders are placed in an elevator that shoots up 13 stories and then plummets back twice.

Disney said in a written statement that the ride was closed until more information was available.

"Our concern is for the family and we are working with them to provide whatever assistance they need," the statement said.

A 4-year-old Pennsylvania boy, Daudi Bamuwamye, died June 13 after riding Epcot Center's (search) "Mission: Space," and a 77-year-old Minnesota woman, Gloria Land, died in February after riding the Magic Kingdom's "Pirates of the Caribbean."

A medical examiner's report said Land was in poor health from diabetes and several ministrokes and her death "was not unexpected." The cause of the boy's death remains under investigation.

Florida's major theme parks are not directly regulated by the state, and instead have their own inspectors.