The SOMA tent at the Outside Lands festival in San Francisco's Golden Gate Park was closed in the opening hours of the three days of concerts Friday afternoon.
The incident happened just before 5 p.m.
Organizers cleared the SOMA tent venue after a stage partially collapsed, according to witnesses and as Disco Lines performed.
"For the safety of our festival audience, we are closing SOMA Tent for the remainder of the day," according to a notice sent through the Outside Lands app at 4:57 p.m. "We apologize for any inconvenience this has caused and will provide updates when available."
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There were no reported injuries and festivalgoers NBC Bay Area talked to said they didn’t even notice a disturbance.
Outside Lands isn’t sure yet if the stage will reopen for Saturday.
Thom Jensen has more in the video above.
