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A teenage boy was critically wounded in a shooting Tuesday afternoon in the Humboldt Park neighborhood, Chicago police said.

The 17-year-old was walking on the sidewalk at the 1600 block of North Washtenaw Avenue when he was shot in the left shoulder by an unknown assailant about 5:10 p.m., according to Chicago police. The teen was transported to St. Mary of Nazareth Hospital in critical condition.

There were no arrests as of Tuesday evening as Grand Central Area detectives investigated, police said.

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