A man was attacked early Saturday morning on a northbound Q Train in Brooklyn, according to police.

Authorities say a man slashed the 37-year-old victim around 6:20 a.m. He then fled south on Cortelyou Road.

The victim was taken to Kings County Hospital and is expected to be OK.

Police describe the attacker as around 6’2”, with a black jacket, beige hoodie, black shorts, white sneakers and a black face mask.

Anyone with additional information is urged to call 1-800-577-TIPS.