The Georgia school sh**ter was known to the FBI since 2023.

Colt Gray was suspected of making threats to shoot up schools more than a year ago. FBI says it sent Jackson County deputies to his house but the then-13-year-old denied making the threats. Dad said son didn't have unsupervised access to his hunting rifles. – 𝕏 Source

Apalachee High School received a phone call this morning warning that there would be shootings at five schools and that Apalachee would be the first. – CNN