Officials on the scene said 28 people were taken to the local hospital.
Of those, five had serious injuries, according to Belvidere fire officials.
The venues roof was damaged by severe weather, according to reports.
Apollo TheaterWMAQ
Calls came in around 7:48 PM when a heavy storm rolled through the area, possibly spawning atornado.
J.B. Pritzkersaidhe was monitoring the situation in the city, located about 80 miles northwest of Chicago.
Severe weather in Illinois was matched by several tornadoes in Arkansas, where homes and shopping centers were hit.
