The FBI has admitted that it was aware of alleged threats of violence made last year by the 14-year-old suspect arrested in the shooting at Apalachee High School in Georgia in which four people were killed and nine others wounded. At the time, the agency passed the information on to local law enforcement. Jackson County Sheriff Janis Mangum, whose deputies first questioned the shooter’s family in 2023, spoke to CBS News’ Mark Strassmann Thursday.