A Georgia grand jury on Thursday indicted 14-year-old Colt Gray and his father for the deadly shooting in September at Apalachee High School in Winder.

Gray and his father, 54-year-old Colin Gray, had already been charged in the case and were being held without bond.

The indictments add new charges for both.The grand jury charged the teenager with 55 counts ranging from murder to aggravated assault to cruelty to children, the Athens Banner-Herald reported.  His father faces 29 counts, including second degree murder, involuntary manslaughter, cruelty to children, and reckless conduct.

An arraignment for both is scheduled for November 21.

Colt Gray is charged with entering his high school on September 4 with an AR-15 style rifle hidden in his backpack, as CrimeOnline reported. He left his second period classroom and reportedly texted his mother and father an apology, prompting his mother’s desperate call to the school about the text. But school officials didn’t find him in time, and he opened fire, killing two students and two teachers and wounded eight other students.

Colin Gray gave his son the rifle he used for Christmas in 2023, several months after authorities had questioned them both about alleged threats the teen had allegedly made. Colt Gray denied making any threats, and his father said his son did not have access to any guns.

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[Featured image: Left: Colin Gray enters the Barrow County courthouse for his first appearance, on Friday, Sept. 6, 2024. (AP Photo/Brynn Anderson) Right: Colt Gray/Barrow County Sheriff’s Office via AP]