By CBS 2 Chicago Staff

CHICAGO (CBS) — A bullet seemed to come out of nowhere when it struck a woman in her apartment in South Shore Wednesday evening.

At 6:34 p.m., the 42-year-old woman was in her third-floor apartment in the 7800 block of South Constance Avenue when she a bullet struck her in the chest, police said.

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The woman was taken to the University of Chicago Medical Center in critical condition.

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Police late Wednesday were combing the alleys for clues.

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Area Two detectives were investigating.

CBS 2 Chicago Staff