The attack was reported at 65 Bayard Street around 6:15 p.m.
Authorities say the 55-year-old woman was punched by an unknown man.
New York State Assemblymember Yuh-Line Niou tweeted video of the incident she received from a constituent:
The suspect was apprehended at the scene and was taken to Bellevue Hospital where he will undergo a psychiatric evaluation.
The woman was taken to another hospital with a facial injury, but was said to be stable.
No words were exchanged between the victim and the suspect.
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