Wednesday at about 9 in the morning, Cochrane RCMP was notified that Edge School had implemented its Lock Down Plan after discovering a threatening note found on a student’s locker at the start of the school day. The author of the note said he'd be “returning to the school with a machine gun to kill everyone but his buddy”. Cochrane police immediately secured the school.

After a search, school staff asked students to step up if anyone had information concerning who wrote the note. Four came forward - three saying they knew about the note but didn't tell anyone. The fourth admitted to writing the note and leaving it on the locker as a joke. The youth was arrested and taken to RCMP headquarters for questioning and to be picked up by his parents. Charges of uttering threats and mischief are pending.