Feb. 16 (UPI) -- The murder trial of the father of an alleged Georgia school shooter began Monday.

Colt Gray, then 14, allegedly killed two teachers and two students and injured nine others at Apalachee High School in Winder, Ga., in 2024 with a gun his father bought him for Christmas. His father, Colin Gray, pleaded not guilty to 30 charges associated with the shooting, including two counts each of second-degree murder and involuntary manslaughter.

Police allege that they spoke with Colin Gray a year earlier about a social media post made by Colt saying he threatened to commit a school shooting. After the discussion, Colin Gray allegedly bought Colt an AR-15-style rifle for Christmas, which he is accused of using in the attack.

Colt Gray is awaiting trial on 55 charges, including murder and aggravated assault.

Related