Police are seeking an at-large suspect who struck a subway rider with an unknown object before fleeing in Brooklyn.

Around 9:30 p.m. on Tuesday, authorities responded to a call of an assault on a southbound 3 train between Atlantic Avenue and Eastern Parkway. The victim, a 29-year-old woman, had cuts on her right hand that were caused when the suspect struck her with an object wrapped in a cloth, police stated.

RELATED: Subway commuter's face slashed at Bleecker Street

The victim told police that the suspect said, "I will chop you up on this train," before hitting her.

The suspect, who fled the scene, is described as a black man who stands approximately 5-feet-9 and weighs about 175 pounds, according to police. He was last seen wearing a black jacket, green hat, camouflage pants and a backpack.

Anyone with information should call Crime Stoppers at 1-800-577-8477 or visit the website at WWW.NYPDCRIMESTOPPERS.COM.