Agent Dick Alen said Sunday via e-mail that the 84-year-old Berry was on a plane going home to the St. Louis-area. He says he didn't know if Berry was seeking additional medical treatment.

Fire Department spokesman Joe Roccasalva says Berry felt better and signed a release after being checked out before Saturday's show. Concertgoer Steve Handwerker says Berry gave an erratic, out-of-tune performance and had to be helped offstage.

Handwerker says Berry thanked the crowd before leaving the stage.

Berry is known for classic songs including "Maybelline," ''Johnny B. Goode," and "Roll Over Beethoven."