The show was stopped, and the 1,000 or so fans were immediately evacuated. Firefighters inspected the venue and found that an approximately 30-by-30-foot section of the ceiling had given way. About 750 people were inside for a performance by the band Theory of a Deadman when the ceiling fell in. “We really have no idea how this could have possibly happened,” First Avenue General Manager Nathan Kranz said to the media. It’s supposed that “reverberation of music” caused a leak in the pipes in the ceiling, and the tiles fell after becoming saturated with water, because at a time water was coming from the ceiling like rain. Concertgoer Todd Johnson, of Elk River, told the newspaper the band had just finished its fourth song.