Homicide detectives are investigating after a man was shot in the neck and killed in north St. Louis Monday evening.

At around 6:15, police responded to a call on the 8900 block of Riverview Boulevard. When they arrived, they found 35-year-old Shelly Hampton suffering a gunshot wound to the neck. He was pronounced dead on the scene.

Homicide detectives were called in to investigate and found Hampton was shot by an acquaintance while Hampton argued with someone else. The shooter fled the scene but returned and talked to the police. He was taken into custody.

The investigation is ongoing.