It happened around 7 p.m. on the 2000 block of East Allegheny Avenue.
According to Chief Inspector Scott Small, a 51-year-old male suspect walked into the business, announced a robbery and put a gun to the head of a 36-year-old male store owner.
Police say a struggle ensued between the suspect, the victim, store employees and one customer.
During the struggle, police say the 36-year-old victim was shot multiple times. He was rushed to an area hospital where he's currently listed in stable condition.
The suspect suffered a gunshot wounded to his finger, but Small says the injury could be self-inflicted.
The suspect, who has not been identified, is known to police officers, according to Small.