DENVER — The FBI was investigating the social media accounts connected to the 16-year-old boy who shot two of his classmates before turning the gun on himself two months before the attack at Evergreen High School last week, a spokesperson with the federal agency confirmed with Denver7 Monday.

Back in July, the FBI “opened an assessment into a social media account user whose identity was unknown and who was discussing the planning of a mass shooting with threats non-specific in nature,” a spokesperson from the FBI’s national office said in a statement to Denver7.

But because the FBI wasn’t able to identify the individual behind those accounts, “there was no probable cause for arrest or additional law enforcement action at the federal level,” the spokesperson added.

The FBI continued to i

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