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Tourists get their picture taken at the front entrance of Universal Studios Hollywood theme park on May 4, 2010.
Los Angeles County fire officials say a fire broke out at a building housing a closed theme park ride at Universal Studios.
Inspector Quvondo Johnson says reports of heavy smoke came in at 1:15 p.m. Wednesday from the theme park.
Johnson says the ride is under construction and the blaze may have resulted from a welding torch.
Firefighters have searched the three-story building and no one was found.