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HARLEM, Manhattan — For the second time over the weekend, police were looking for someone who attacked a person in their 70s on a Manhattan street.

The incident took place on Lenox Avenue around 3:14 p.m. Sunday, police said.

A woman, 75, was approached by an unidentified man who punched her in the face and knocked her to the ground, video of the incident showed. The victim suffered a laceration to her lip, and pain and swelling on her face, but refused medical attention, police said.

The man fled westbound on West 118th Street. No arrests have been made as police continue investigating.

On Saturday, a man was caught on video slamming a 73-year-old man to the ground on a sidewalk in Hell’s Kitchen, police said. Authorities were still looking for the suspect in that case as well.

Anyone with information in regard to this incident is asked to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM, or on Twitter @NYPDTips. All calls are strictly confidential.

Correction: An earlier version of this story misstated the day the first attack occurred.