The suspect in a Georgia high school shooting that left four dead had been under investigation by the FBI for making similar threats a year beforehand, multiple reports confirmed. Colt Gray, 14, surrendered to a school resource officer after allegedly shooting four people dead and injuring nine others at Apalachee High School in Winder, a town in Barrow County, Georgia, on Wednesday. He’s being charged as an adult in the murders of two students — Christian Angulo and Mason Schermerhorn, both 14 — as well as 39-year-old teacher Richard Aspinwall and 53-year-old teacher Christina Irmie, NBC Ne…
