BARCELONA, Spain (CBS) -- A stage went up in flames at a music festival as a crowd of 22,000 concertgoers were dancing in Barcelona at Parc de Can Zam.
Spain's Globo is reporting the cause of the fire to be on-stage fireworks.
Organizers blame the fire on a technical malfunction.
The Tomorrowland Unite Festival was being streamed from Belgium.
Spanish authorities say all 22,000 people were evacuated from the park without injury, though several people were treated for anxiety.
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