A 14-year-old is charged with four counts of felony murder in connection to the deadly shooting at Apalachee High School in Winder, Georgia, according to the Georgia Bureau of Investigation.
Colt Gray is expected to appear in court on Friday, the agency said.
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Authorities believe Gray opened fire at the high school on Wednesday, killing two students and two teachers. Nine others were injured.
On Thursday, authorities in Georgia arrested 54-year-old Colin Gray, the father of the suspected shooter. He is charged with four counts of involuntary manslaughter, two counts of second-degree murder and eight counts of cruelty to children.
"This is day 2 of a very complex investigation & the integrity of the case is paramount," the Georgia Bureau of Investigation said in a statement on X. "We ask for the public’s patience as we work to ensure a successful prosecution & justice for the victims."
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The Barrow County Sheriff’s Office said it is not releasing body camera videos or audio to “protect the integrity of the investigation.” However, it added that incident and arrest reports will be released when they are available.
The FBI revealed on Wednesday that local authorities had interviewed the teen in 2023 after receiving anonymous tips about online threats to commit a school shooting. The agency said the boy denied making the threats and his father said his son didn't have "unsupervised" access to hunting guns in the house.
"At the time, there was no probable cause for arrest or to take any additional law enforcement action on the local, state or federal levels," the FBI wrote.
GBI said it has no evidence of additional shooters, but is "pursuing all leads regarding any potential associates of the shooter."
