A grand jury on Thursday indicted accused Georgia school mass shooter Colt Gray and his father Colin on dozens of charges arising from the Sept. 4 shooting deaths and injuries.

A grand jury indicted a 14-year-old alleged shooter and his father who bought him the gun on Thursday in the September slaying of two students and two teachers at a Georgia high school, affirming initial charges brought by prosecutors and adding numerous other criminal counts.

A grand jury handed down dozens of charges Thursday for the alleged Apalachee High School shooter and his father, also accused in connection with the deadliest school shooting in Georgia's history.