Police said at about 2:21 a.m. Saturday morning, an unknown male suspect threw an incendiary device through the window of an apartment in the 3100 block of South Green Street.
Heavy smoke and flames could be seen from the second floor of the building.
The woman died at the scene, according to police. She was later identified as Charnette Walker, 54, and she lived at the apartment, the Cook County Medical Examiner's Office said.
The Chicago Fire Department transported the girl to Stroger Hospital where she was last listed in fair condition.
SEE ALSO | 1 dead, 4 rescued from South Shore apartment fire, Chicago Fire Dept. says
As crews board up the apartment, Chicago police are now looking for a person that they believe started the fire intentionally.
Family members and neighbors visited the home later in the day Saturday. They were devastated by the damage and too upset to speak with ABC7 on camera.
A motive for the suspected arson was not clear and there is no one in custody at this time. Police continue to investigate.
No further information was immediately available.
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