One man decided to terrorize straphangers during their morning rush hour commute last week while onboard a train at Grand Central station, authorities said.

On Jan. 28 at about 7:35 a.m. the suspect was onboard a southbound 4 train at Grand Central when he decided to lower his pants and expose himself to a female passenger, police said.

He then pulled his pants up and went to an adjacent train car where he once again exposed himself but this time in front of other female passengers.

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Photographs of the suspect have been released and he is described as a black man, about 30 years old and standing about 5 feet 9 inches tall. He was last seen wearing a black hooded sweatshirt and blue jeans.

Anyone with information in regards to this incident is asked to call Crime stoppers at 1-800-577-TIPS (8477).

The public can also submit their tips by logging onto the Crime stoppers website or by texting their tips to 274637 (CRIMES) then enter TIP577.