Police say the incident happened Sunday evening on Bay Ridge Avenue.
Authorities say the suspect approached the 81-year-old victim and forcibly removed her purse before pushing her to the ground.
The victim hit her head on a metal fence, but was not seriously hurt.
She was treated for bruises on her head.
Anyone with information is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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