A teenage boy is recovering after getting shot in his left buttocks during an argument on a South Philly corner, police said.

Just before 1 p.m., the victim, 14, was at the intersection of Christian and 13th streets when he got into an altercation with three other teens, a police source said.

It's unclear what the fight was about, but it escalated into gunfire. Ultimately, the teen was struck in his left buttocks and was taken by police to Children's Hospital of Philadelphia, the source said.

He remains there in stable condition.

Meanwhile, police arrested at 19-year-old suspect in the incident, the source said. He's currently being interviewed by investigators from South Detectives. Two other teenage males are being sought by police.

Officers are looking to pull surveillance footage from a SEPTA bus that passed by the intersection as the shooting took place, the source said. No weapon was recovered at the scene.

And though the shooting took place across the street from the High School for the Performing Arts, the victim is not a student there, the source said.

Robert Moran of the Inquirer also contributed to this article.