CPD initially said the man was found on the first floor of a home after a fire in the 7900-block of South Elizabeth Street about 12:45 a.m. He was pronounced deceased on the scene, and no other injuries were reported.
Chicago police later said further investigation revealed the man had been shot in the head.
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The man has been identified as Jermaine Waterman, according to the Cook County Medical examiner.
Area Two detectives are investigating the incident as a homicide.