Police were called to the Aldi food store in Zion Thursday night after getting a 911 call for shots fired in the parking lot.
Officers found the body of a 23-year-old Beach Park man in the front seat of a parked vehicle.
A friend says the victim was waiting in the parking lot to meet someone to buy two cell phones.
So far, police have not released any details about a motive or any arrests in the case.