South suburban police said around 5:45 p.m. they received multiple calls about a man showing a gun inside the mall.
The man was in a verbal altercation in the south end of the mall when he showed the gun, Chicago Ridge police said.
No shots fired and no injuries reported, according to suburban police.
The suspect fled the mall before police arrive.
Chicago Ridge police are investigating. No arrests have been made.
Anyone with information is asked to contact the Chicago Ridge police at (708) 425-7831.