A 17-year-old Johnson High School senior was arrested and suspended after authorities say he wrote he intended to hurt teachers and students at the school.

Tristin Allen Patrick, 17, was arrested Tuesday at the school after a journal with the threats in it was submitted to a teacher there, according to a news release from the school district.

The teacher notified Principal Stan Lewis, and he notified the Hall County Sheriff’s Office.

Patrick “wrote in a journal assignment a letter describing his intent to do bodily harm to students and teachers at Johnson High School by means of a school shooting,” according to a Sheriff’s Office news release.

Sheriff’s officers searched his car, which was on school property, and found two knives with a blade length of two inches or more. Having the knives on school property is a violation of policy and of criminal laws in Georgia, according to the Sheriff’s Office.

Patrick is charged with making terroristic threats and possession of a weapon on school property.

He is barred from any school campus in the district, pending a judicial tribunal.

Patrick was listed as being in the Hall County Jail about 4 p.m. Tuesday.