Newly released surveillance video shows the incident unfolding in the Times Square subway station beginning around 8:30 p.m.
Police say a 23-year-old woman was waiting on the 7 train platform when an unidentified man approached her and grabbed her breast.
An MTA employee in the area then intervened, resulting in a minor scuffle before the suspect got away.
He's described as being approximately 25-30 years old, heavy set, and was last seen wearing a dark colored sweat shirt, gray pants and gray sneakers.
Anyone with information is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-8477, submit tips online at NYPDCrimeStoppers.com, or text any tips to 274637 (CRIMES) and then enter TIP577.
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