Colin Gray, the father of the Georgia school shooting accused 14-year-old Colt, said his son was bullied by classmates and called names. In an interview to detectives last year, Colin Gray who gifted the gun to Colt on Christmas said it was very difficult for him to go to school and not get picked on. But why were the father-son duo interviewed by the investigators last year? The sheriff received a tip from the FBI last year that Gray had possible threated to shoot up a middle school. The threat was made on Discord.