The crime happened after the female minor exited a store in the 3100 block of South Harding Avenue while she was walking home in Little Village, police said.
The suspect was described as a Hispanic man with black hair between the age of 45 and 50, wearing a red baseball hat, a brown jacket and blue jeans.
CPD warned residents to be aware of their surrounding and to call police with any information or to supports suspicious activity.
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Area detectives continue to investigate.
No further information was immediately available.
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