A death metal concert became a calamity Friday night after a vicious storm ripped through an Illinois auditorium, killing one person and injuring 28 others.
The packed show at the Apollo Theater in Belvidere, IL, kicked off about 30 minutes before the massive storm rolled into town, causing the roof to collapse onto some of the more than 260 concertgoers.
Morbid Angel, Revocation, Crypta and Skeletal Remains were all scheduled to hit the stage, but the roof came crashing down and people got trapped underneath the wreckage.
Check out video that surfaced online ... showing the aftermath of the destruction during the mad rush to find victims under the debris.
Firefighters responded to a "mass casualty" incident around 7:30 PM.
Belvidere Fire Chief Shawn Schadle announced one person was killed and over two dozen were injured.
Five of the surviving victims were seriously hurt, five others suffered minor injuries, and 18 more sustained moderate injuries. All 28 were hospitalized.
Everyone who attended the performance was accounted for by 10:15 PM.
Morbid Angel took to Facebook, saying the concert was canceled due to a "Tornado that hit the Venue." The band encouraged everyone to seek shelter and to stay safe.