Colin Gray, 54, is being charged with four counts of involuntary manslaughter, two counts of second degree murder and eight counts of cruelty to children, GBI said. The shooting suspect has been charged with four counts of felony murder.
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Police and federal agents were investigating if the weapon used in the shooting, described by officials as an AR-style weapon, was purchased by the teen's father as a gift for his son in December 2023, according to four federal law enforcement sources close to the investigation.
In May of last year, the suspect and his father were both interviewed by the Jackson County Sheriff's office after the FBI received tips about online posts threatening a school shooting, the FBI said in a statement Wednesday night. At the time, investigators didn't have enough evidence for an arrest or enough probable cause "to take any additional law enforcement action," the FBI said.