An armed robber expected to walk into a cellphone store in Chicago and saunter off with wads of cold hard cash and merchandise, but little did he know there was also a gun owner ready to protect himself and others.

An armed man reportedly attempted to rob a Metro by T-Mobile cellphone store in Chicago's Humboldt Park neighborhood around 7 p.m. Saturday. During the intense robbery, a 29-year-old gun owner with a concealed carry permit allegedly opened fire on the thief. The would-be robber was struck with at least two gunshots in the chest and abdomen, according to a news report by WFLD-TV.

The suspect was transported to the local Stroger Hospital in critical condition, but was later pronounced dead.

It was not immediately known if the legal gun owner was the business owner, an employee, or a concerned customer. The shooter did possess a valid Concealed Carry License and Firearm Owner's Identification Card. Police confiscated both firearms from the parties involved in the attempted robbery, according to the news report.

The incident remains under investigation by detectives.

This is just the latest example of a bad guy with a gun receiving their comeuppance from a good guy with a gun.

• Last week, an 80-year-old Florida man defended himself against two men trying to carjack him by blasting the would-be thieves.
• Earlier this month, two armed Detroit homeowners thwarted home invasions, which left one of the burglars dead.
• Also this month, a Louisiana resident shot all four armed men who were trying to rob his home, leaving two of them dead and the other two survivors facing murder charges.
• In November, an Arkansas homeowner fired on an aggressive burglar who was hiding in a closet.
• In May, a Kentucky man trying to rob a home was lucky to leave with only a swollen face following an encounter with a legal gun owner.