A 13-year-old southeast Missouri boy has been fatally shot, and a 15-year-old relative is in custody.

KFVS-TV reports that the shooting happened Wednesday night in Wayne County. The victim's name has not been released but authorities say he was from the small town of McGee, about 130 miles southwest of St. Louis.

Wayne County Sheriff Dean Finch says the victim was shot in the head with a 20-gauge shotgun, and the shooting was not an accident. Finch says the victim and the suspect were related and attended the same school.

Police and counselors have been at the school the boys attended to help console classmates.