CHICAGO (WLS) -- A 39-year-old woman was stabbed in the chest early Thursday morning outside the Jefferson Park CTA Blue Line station on Chicago's Northwest Side.
The victim was stabbed by a woman she did not know around 12:50 a.m. in the 4900-block of North Milwaukee Avenue, police said.
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She was transported in serious condition to Advocate Lutheran General Hospital.
Area North detectives are investigating what led up to the stabbing. No one is in custody.