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A teenage boy was discovered unresponsive Friday  in an alley in the West Garfield Park neighborhood, Chicago police said.

The victim, later identified by the Cook County medical examiner’s office as 17-year-old Drevon Watson, was found shortly before 9:30 a.m. in the 4600 block of West End Avenue with a gunshot wound to the chest. He was taken to Stroger Hospital where he was pronounced dead.

Detectives are investigating the circumstances surrounding the fatal shooting.