CHICAGO (AP) — A manager at a Chicago mall where the boy band Mindless Behavior signed autographs for fans says a disturbance that left two people with minor injuries was "totally unrelated" to the event.

Ford City Mall senior general manager John Sarama says a group of older youths caused Saturday's disturbance, not the young girls and parents who attended the boy band appearance.

Police spokesman Veejay Zala says multiple arrests were made but none for serious charges. He says officers evacuated the mall and closed it for the rest of the day.

Sarama says the Mindless Behavior event ended about 45 minutes before the disturbance. Fans who bought the group's new CD during a pre-sale were given posters for band members to sign.

The group's publicist couldn't immediately be reached for comment.