What we know about the Apalachee High School shooting in Georgia, the deadliest school shooting this year CNNFBI Atlanta: Apalachee High shooter Colt Gray was investigated last year for threats Online AthensThe latest on the Apalachee High School shooting CNNDC among those killed in Apalachee HS shooting ESPNApalachee High School shooting victims identified; 14-year-old suspect to be charged with murder FOX 5 Atlanta