A straphanger was left clinging to life with a stab wound after an argument aboard a Q train turned violent in Brooklyn early Friday morning, police said.
The 39-year-old victim was attacked aboard the southbound train stopped at the Parkside Ave. station in Prospect-Lefferts Gardens around 12:40 a.m., according to cops.
The subway rider had been arguing with another man, when the latter drew a sharp object and stabbed the victim in the stomach, said police.
Medics rushed the victim to Kings County Hospital, where he’s listed in critical condition.
The stabber fled the train on foot.
Police released images of the suspect, who was last seen dressed all in white, wearing a T-shirt, shorts and sneakers, plus a blue backpack.
Anyone with information is asked to call Crime Stoppers at (800) 577-TIPS. All calls will be kept confidential.