A masked gunman shot and killed a man in an upper Manhattan fast-food joint early Sunday morning, police and sources said.

The 25-year-old victim was inside Village Fried Chicken on Amsterdam Avenue near West 146 Street at about 2 a.m. when the gunman opened fire after a fight, police said.

The shooter, who covered his face with either a scarf or a mask, shot the victim twice in the head, police sources said.

The victim was rushed to Harlem Hospital and pronounced dead, police said.

No arrests had been made by Sunday morning, but an investigation into the killing is ongoing.