Georgia state officials arrested the father of 14-year-old suspected school shooter Colt Gray on Thursday (Sept 5) in connection with Wednesday's shooting at Apalachee High School in Winder, which left four dead and nine injured.br br The Georgia Bureau of Investigation reported that 54-year-old Colin Gray has been charged with four counts of involuntary manslaughter, two counts of second-degree murder, and eight counts of cruelty to children.