Disney World officials have reopened an attraction they closed because a 16-year-old British girl suffered cardiac arrest after riding it.

Disney has invited an official from the state Bureau of Fair Rides and Exhibitions to monitor the inspection, which the park doesn't typically do.

The British girl is in critical condition. Officials aren't releasing precise details of what happened to her yesterday. But police say the girl felt nauseous and dizzy after getting off the "The Twilight Zone Tower of Terror," which depicts a haunted elevator ride.

This is the second severe medical emergency involving children at the park in less than a month.

A 4-year-old Pennsylvania boy died June 13th after riding Epcot's "Mission: Space," a ride so intense that it has motion sickness bags and several riders have been treated for chest pain.