This post has been updated.

Three men were inside a Chinese takeout in Northwest Philly's Ogontz section late Wednesday night when a revolver-wielding thug fired several shots at them, ran away, then returned seconds later and fired more shots, cops said.

Police said the shooting happened inside the Happy House Chinese restaurant, on Ogontz Avenue new Champlost, shortly before 10:30 p.m. and appeared to be a robbery. Surveillance cameras captured the entire incident, Chief Inspector Scott Small said.

Only one of the men held up, an 18-year-old, was hit. He suffered a graze wound to the arm, police said, but initially refused medical attention. His grandmother later drove him to Albert Einstein Medical Center, according to investigators, where he was listed in stable condition.

Police said they received information that the sidewalk in front of the Chinese takeout is a drug location, and that the two other men who were in the store at the time of the shooting were nowhere to be found when cops arrived at the scene.

The victim's jacket, dropped cash and one bullet marked the scene late Wednesday night as cops investigated.

The shooter was described as a tall man wearing all dark clothing and a hat. He was last seen around the corner running west on Champlost Avenue.