Prosecutors say an 18-year-old man was plotting a “profoundly disturbing” attack on his western Colorado high school with weapons and explosives.
Robert Dell Johnson is being held on $100,000 bail on suspicion of criminal solicitation and interference with an education institution.
Mesa County District Attorney Pete Hautzinger revealed few specifics on the investigation into the threat against Palisade High School, but the sheriff said the threat was credible.
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