A man was inside the store located in the 6300 block of Cottage Grove around 12:43 p.m. when someone walked in and shot him multiple times in the head, face and body, Chicago police said.
The offender left the scene in a gray SUV and drove southbound on Cottage Grove, police said.
The man died at the scene.
The Cook County medical examiner’s office identified him as Victor Hampton, a resident of South Shore.
The offender is described as a Black male, wearing a mask and gray clothing, with shoulder-length dreadlocks.
No one is in custody as Area One detectives investigate.
The Sun-Times Media Wire contributed to this report.