Bystander footage showed the man confront the suspected shoplifter and reach for her bags, which set off a scuffle between the two near the entrance.
A witness said the altercation happened Sunday around 1:30 p.m. at a T.J. Maxx store on Limonite Avenue.
Video showed two women with black hoodies trying to walk out of the store with armfuls of merchandise.
After one woman leaves, a man jumps in to stop the other woman from walking away. A brief struggle ensues and the man eventually knocks the woman to the ground, and she appears to leave without the two bags she tried to take.
A report was taken by law enforcement. No arrest has been made so far.
It's unclear what merchandise was actually taken.