At least four people were injured after part of the ceiling of a Chicago music hall came crashing down on concertgoers early Saturday morning.

The incident happened around 2 a.m. at the Concord Music Hall in the 2000 block of North Milwaukee Avenue in Logan Square, police said.

The performer, Los Angeles-based DJ Datsik, had just begun his set when witnesses say the ceiling began to shake.

“The sound system inside the venue was so intense, it had so much bass, that it literally shook the ceiling down,” said witness Ryan Chun.

Cell phone footage of the collapse shows a piece of the ceiling swinging down as dust and debris flies into the air.

Police said four people suffered minor injuries in the collapse. One person refused to be transported, two people were transported to Saints Mary and Elizabeth Medical Center and one person was taken to Stroger Hospital.

It was not immediately clear what caused the collapse, according to authorities, but fans said the show was canceled following the incident.

“Datsik, who was the performer tonight, did have to cancel the show early, about only 15 minutes into his probably what would be a one-hour set originally,” Chun said.

