Authorities say an Anadarko man who threatened schools in Chickasha and Lawton attended a school where another student killed seven people and himself nearly three years ago. Joshua James Hunter is charged in Caddo County with committing a terrorist hoax, threatening to perform an act of violence and arson.

Hunter was a student at Red Lake High School in Minnesota when fellow student Jeffrey Weise shot and killed a teacher, a security guard and five students. Weise wounded seven others before committing suicide.

Investigators in Oklahoma say Hunter threatened to shoot students and detonate chemical bombs in Lawton and Chickasha last week. Both districts locked down their schools after Anadarko police reported the threats.

Authorities say Hunter planned for friends to release chemical bombs and randomly shoot students at Eisenhower High School in Lawton and Chickasha High School. Officials say the motivation was "to make a statement."

Police say Hunter told a woman in Anadarko of his plans and the woman reported them to police.