The shooting happened on May 9 in the Calumet Heights neighborhood's 9100-block of South Stony Island Avenue at about 9 p.m.
Police said a 64-year-old man was standing on the sidewalk when a male suspect approached and shot the victim before fleeing westbound.
The victim was shot in the head and chest and pronounced dead at the scene, police said. The victim's identity has not been released.
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No one is in custody and Area Two detectives are investigating.
Police asked anyone with information to call them at 312-747-8271.
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