New York City police are seeking the public’s help in finding a man who threatened a 45-year-old Harrison man on the subway.

The incident was reported last month and happened on board a northbound "E" train approaching the West 4th Street station.

According to investigators, he threatened the man and later showed a knife.

Investigators say when the train stopped, the man, who was pushing a stroller, held the subway doors open while he continued threatening the Harrison man.

The victim is described as a black male in his 20's, seen wearing a red T-shirt.

Anyone with information is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS.