A 40-year-old Oklahoma man and a 16-year-old boy are dead after the man an argument between armed people erupted into gunfire during a family gathering in Tulsa.

Three other people — a 20-year-old man, an 18-year-old man, and a 15-year-old boy were also shot, KOTV reported.

Tulsa police said the 16-year-old, who was armed and the boyfriend of an invited guest, got into a dispute with another guest, leading the 40-year-old to order him and his friends to leave at the point of a semi-automatic rifle, KOKI reported.

The initial gunfire appeared to be between the 16-year-old and the 40-year-old. The 40-year-old shot the teen, who apparently shot him. That prompted the 20-year-old, the older man’s son, to pick up his father’s rifle and open fire on the 15-year-old, who was also armed and returned fire.

The 16-year-old was pronounced dead on the scene while the older man was taken to a hospital, where he died. The 20-year-old was shot in the leg and hip, and the 15-year-old was hospitalized in critical condition. The 18-year-old was said to be possibly paralyzed. It’s not clear if he was part of the argument or a bystander.

Police were called to the scene when the shooting was all over, just before 2 a.m. They said more than a dozen people were at the gathering, including children.

The names of the people involved have not been released.

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