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Police are conducting a homicide investigation after a 42-year-old woman was discovered dead in an alley early Friday in the Back of the Yards neighborhood on the South Side.

The woman suffered blunt force trauma to her upper body and was found about 1:30 a.m. in an alley in the 2000 block of West 51st Street, according to police.

She was pronounced dead at the scene, and her death is being investigated as a homicide, police said.

No other information was immediately available, and no one was in custody as a result of the incident.