The ceiling collapsed during a concert at the legendary Minneapolis nightclub First Avenue on Wednesday night, injuring three people.
Officials are baffled by the sudden collapse, which happened midway through a performance by Canadian metal band Theory of a Deadman, The Minneapolis Star Tribune reports.
“A large portion of the ceiling fell and took out water pipes with it,” said Nate Kranz, First Avenue general manager. “We have no idea why or how it happened. We won’t know anything about this until tomorrow. It was a terrible surprise.”
Witness Ben Strumberger told NBC News that he was standing in front of the soundboard when the ground started shaking.
“The band quit playing and everyone turned around,” he said. “There was a ceiling piece laying on the floor.”
Another witness, Michaela Libersky, was just feet away from a falling segment, but was uninjured. “It was so scary,” she told NBC News. “I’m just so glad that no one in our group got hurt.”
At least two people were taken to a nearby hospital for treatment.
Fire officials are still investigating the cause of the collapse.