It happened near 7th Avenue and West 14th Street in Chelsea on Thursday, July 6 at around 9 a.m.
The man suddenly approached the 67-year-old woman and hit her in the head with a rock.
He then took off on West 15th Street toward 8th Avenue.
The victim was rushed to an area hospital with a head injury.
The attacker is described as a man with a medium build, with long dark hair, a beard, and approximately 6'2" in height. He was last seen wearing dark pants and a green shirt.
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).
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