Police are searching for a man who groped a woman inside a Brooklyn subway station.

They say it happened at the Jay Street Borough Hall subway station on March 9.

Police say the 20-year-old woman was leaving the station when she was grabbed from behind by a man.

They say the man grabbed the victim's rear over her jeans then ran away. 

Police say the woman was not injured. 

The suspect is described as being 30-35 years old, 6 feet 2 inches tall, and weighing 175 pounds. He was last seen wearing a dark-colored winter sleeveless vest, blue jeans, black ski cap, a chain around his neck and a red sweater.

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