The shooting occurred in the 11600-block of South Halsted Street at about 11:12 p.m. Sunday.
Police said a 32-year-old man was in the vestibule of a fast food restaurant and was involved in a physical altercation.
A male suspect then took out a handgun and fired, hitting the victim in the back, police said. The victim was pronounced dead at the scene.
Surveillance video shows the suspects arrive in a blue Lincoln Nautilus. The video also shows a suspect take out a handgun
Anyone with information is asked to call Area Two detectives at (312) 747-8271.