14-year-old in custody after four killed in US high school shooting

A 14-year-old student killed two fellow students and two teachers and wounded nine others in a shooting at a Georgia high school on Sept 4, jolting the United States with the first mass campus shooting since the start of the school year.

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The suspect, who had been interviewed by law enforcement in 2023 over online threats about committing a school shooting, was taken into custody shortly after the shooting at Apalachee High School in Winder, Georgia, investigators said.

He was identified as Colt Gray and will be charged and tried as an adult, Mr Chris Hosey, director of the Georgia Bureau of Investigation, told a press conference.

Barrow County Sheriff Jud Smith said the gunman, armed with an "AR platform-style weapon", a semi-automatic rifle, was quickly confronted by deputies assigned to the school and that the suspect immediately got on the ground and surrendered.

Once under arrest, the suspect spoke to investigators, who believe he was acting alone, but they declined to say if they knew what motivated him.

Officials identified those killed as 14-year-old students Mason Schermerhorn and Christian Angulo and teachers Richard Aspenwall, 39, and Christina Irimie, 53.

All nine of those hospitalised were expected to recover, Mr Smith told reporters.

"Pure evil did what happened ing guns in the house, but the subtoday," he said.