The bullets came through the window of an apartment just before 2:30 a.m. in Chicago's Back of the Yards neighborhood at West 51st Street and South Morgan.
Police say the 34-year-old victim was sitting on the second floor of the building when she was shot.
She was taken to a hospital in serious condition.
No arrests have been made. Police continue to investigate.
No further information about the shooting was immediately available.
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