The child was found inside a home in the North Lawndale neighborhood's 1300 block of South Kedzie Avenue at about 4:14 p.m., police said.
Police said the boy, who suffered trauma to his body, was transported to Mount Sinai Hospital, where he was pronounced dead.
The Cook County Medical Examiner identified the boy as Zaiden A. Collins, and ruled his death a homicide and child abuse case. The medical examiner said Collins suffered blunt-force trauma to his abdomen.
There is no one in custody and Area Four detectives are investigating. Officials did not immediately provide further information about the incident.
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