A spectacular fire at a music festival in Spain has forced the evacuation of more than 20,000 concertgoers in Barcelona, the regional government says.

Images show towering flames consuming a large outdoor stage Saturday night at the Tomorrowland electronic music festival at Barcelona’s Parc de Can Zam.

Barcelona firefighters say there were no serious injuries during the concert evacuation. The event’s private security told authorities they treated 20 people for minor injuries or anxiety during the evacuation.

Firefighters are investigating the cause of the fire. The Tomorrowland website published a statement saying the “stage caught fire due to a technical malfunction.”

The festival in Barcelona was one of several offshoot events of a main Tomorrowland festival in Belgium. Organizers say the Barcelona event has been canceled following the fire.
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