A 16-year-old is in critical condition following a shooting Thursday.

According to police, he was shot in the stomach after attempting to rob Galaxy Balloon Store in the 4300 Block of W. Florissant, which is near O'Fallon Park in north St. Louis.

The 16-year-old pulled out what appeared to be a weapon, the store owner was armed and shot him.

According to a police report, the teen's gun was found to be a replica pistol.

An investigation is ongoing.