A power outage left Universal Orlando in the dark Tuesday night, and guests said some people had to be removed from rides.

Universal did not say which rides were impacted by the outage, but guests on Twitter said The Simpsons and E.T. were affected.

A park representative told Local 6 the park has plans and procedures whenever a power outage occurs, and that many other attractions continued to operate.

The cause of the outage has not been released.