The incident happened near Lenox Avenue and West 118th Street around 7 p.m. Sunday.
The 22-year-old woman says her attacker aimed a gun at her, threw her to the ground and then tried to rape her.
A passerby came to the woman's aid and the attacker took off.
The suspect is described as a black man between 30 and 35 years old, approximately 5-foot-10, last seen wearing a black hoodie and a black bubble jacket.
Anyone with information in regards to this attempted rape is asked to call the NYPD's Crime Stoppers Hotline at 800-577-TIPS.
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