Chicago -- Yesterday, the popular R&B boy ban Mindless Behavior traveled to Chicago and made an special appearance at an local mall for autograph signing. During their appearance a brawl started and grew bigger. The brawl got so bad, stores pulled their security gates down and police were called but could not control the brawl. The brawl circulated outside to the parking lot, where multiple fights broke out and teens were breaking windshields, mirrors, jumping on cars, throwing things at the cops and acting a fool. The fire dept. and helicopters were also called. The mall closed down and the fight continued from the mall, parking lot and on to Cicero Ave. The brawl lasted for a total of 2 hours. Ford City Mall was reopen this morning at 11am.

20 people were arrested, and 2 injured.

Here is some video's from incident below.

source: www.b96.com