Officials say the incident happened near 31st Drive and 140th Street on Wednesday afternoon in a quiet, residential neighborhood.
The victim was punched in the face and knocked to the ground. Officials say she was attacked while passing the suspect on the street.
The suspect was wearing khakis, a dark-colored bubble jacket, black sneakers, and a black surgical mask. Police say he is about 5 feet 10 inches tall and 180 pounds.
The victim was treated for head and back injuries at the scene. Police are asking anyone who recognizes the assailant to give them a call at 1-800-577-TIPS.
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