The shooting happened around 3:10 p.m. in the 6400 block of North Washtenaw Avenue near the West Rogers Park area, Chicago police said.
The victim, a 15-year-old boy, was inside of a residence at the location when he was shot in the abdomen by an unknown offender, police said.
The boy was taken to a local hospital in fair condition.
The suspect was taken into custody at the scene of the shooting, CPD said.
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The exact circumstances surrounding the shooting were not yet known.
No further information was available as Chicago police continue to investigate.
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