Officers responded to a gunshot detection alert around 5:41 p.m. in the 7100 block of South King Drive in Greater Grand Crossing, Chicago police said.
The victim, a 15-year-old boy, was found at the scene and was taken to Comer Children's Hospital, where he was later pronounced dead. His identity was not immediately known.
A person of interest was taken into custody, police said.
Area detectives continue to investigate.
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No further information was immediately available.
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