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By Shamar Walters and Alexander Smith

A 19-year-old has been charged with fatally shooting two women and a man at a home in northeastern Tennessee, police said Sunday.

Robert Seth Denton was found a short time after the incident in the city of Bristol on Saturday, according to a statement from the Sullivan County Sheriff's Office.

He was also suffering from a gunshot wound and was treated at a local hospital before being taken into custody, the statement said.

Robert Seth Denton, 19.Sullivan County Sheriff's Office

Speaking before the arrest, Sheriff Wayne Anderson told NBC station WCYB on Sunday that the suspect was "apparently...a family member but I'm not sure what relationship he is."

Anderson added that the shooter "went in with a long-gun and he just started shooting everybody."

Officers found two women dead in the home after responding to reports of the shooting at 5:45 p.m. ET on Saturday, the police statement said.

A male victim was found with gunshot wounds and died after being airlifted to the hospital. A child was hospitalized after suffering non-fatal gunshot injuries, the statement added.

Denton, who lives in Bristol — which straddles the Tennessee-Virginia border, has been charged with three counts of first-degree murder, a count of aggravated assault and one of felony reckless endangerment.