An Alton High School student allegedly threatened to "shoot up the place," the Alton Telegraph reported.
Justin L. Glen-Colley, 18, was charged with disorderly conduct in connection with the threats, the Telegraph reported. He allegedly threatened people at the school in front of faculty and staff, and was quickly isolated.
He was escorted from school property and sent home. If convicted, he faces a prison sentence of one to three years and up to 30 months probation.
Glen-Colley was charged Thursday. The alleged incident occurred Wednesday.