Police were called to the TGFMobile store at 620 E. Lewis St. shortly after 7 p.m. When officers arrived at the business, a man was found with at least one gunshot wound, according to John Chambers, a city police spokesman.
The victim was taken to a hospital in serious condition.
Chambers said initial reports show that someone entered the store, shot the customer and fled in a vehicle.
No information about the shooter or the vehicle was available Wednesday, Chambers said.