16/04/19991999Notus, Idaho, United StatesIdaho00Shawn Cooper, 15, fired two shots from a 12 gauge shotgun, in the hall near the front desk at Notus Jr. Sr. High School. There were no serious injuries, but some students were close enough to the blast to catch some shrapnel from the tile floor. Shawn Cooper had been undergoing treatment for Bipolar disorder."The Spokesman-Review - Google News Archive Search". Retrieved October 1, 2014.