Tags: Arrested

The teen is expected to be charged with attempted capital murder, aggravated assault on a family member, and aggravated assault on a police officer.

The threats were allegedly made in group chats and social media messages against charter schools River City Science Academy, IDEA River Bluff Charter School, and IDEA Bassett Charter School.

Collin Griffith, 17, is in custody after allegedly killing his mother, Catherine Griffin, 39, on Sunday, according to Polk County Sheriff Grady Judd.