Official: Chuck Berry felt ill before Chicago show

CHICAGO, IL Fire Department spokesman Joe Roccasalva said Berry felt better and signed a release. Roccasalva said the confusion arose because emergency personnel later responded to a patron at the show who was unwell.

Concertgoer Steve Handwerker said Berry fell face-first onto the keyboard and was helped offstage, though he later returned.

Berry is known for his classic songs including "Maybelline" and "Johnny B. Goode."

His agent Dick Alen said he had no information on the matter.