Police have released a picture of a teenager suspected of shooting dead four people in the US state of Georgia.

Two teachers and two students were killed in the attack at Apalachee High School in Winder, northeast of Atlanta, on Wednesday.

Colt Gray, 14, surrendered when “engaged by school resource officers inside the school”, Barrow County police said.

Neither body camera videos nor audio will be released to “protect the integrity of the investigation”, the sheriff’s office said.

Nine others were injured in the shooting.

Gray has been charged as an adult over the deaths of students Mason Schermerhorn and Christian Angulo, both 14, and teachers Richard Aspinwall, 39, and Christina Irimie, 53, according to Chris Hosey, director of the Georgia Bureau of Investigation.

He is due to make his first court appearance on Friday.

Detectives are trying to piece together how the teenager apparently obtained a semi-automatic rifle.

Gray and his father were interviewed last year in connection with online threats about a school shooting made on the gaming platform Discord and denied making the comments, investigators have said.

Gray’s father told officials he had hunting guns locked in a safe in the house and his son did not have access to them.

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