Louisiana ? A Louisiana middle school student stormed into a classroom and fired a gunshot over a teacher’s head Monday before shooting himself in a bathroom, authorities said. Investigators found a suicide note and plans for a rampage in the teen’s journal.

The 15-year-old student, whose name was not released, fired once around 9 a.m. inside a classroom at Larose-Cut Off Middle School, then shot himself in the head, said Lafourche Parish Sheriff Craig Webre. He was in critical but stable condition. The teacher had never taught the teen.

Webre said investigators found a note describing the boy’s plans to “gear up” before his spree, along with a drawing of how he’d dress. The boy also scribbled “I am king” and “y’all will die!” on a sheet of paper investigators found.