EVERETT, Wash. - A former Washington state student has plead guilty to criminal charges after his grandmother reported his plans to carry out a mass shooting at his school.
On Thursday, 18-year-old Joshua Alexander O'Connor entered a new guilty plea to attempted first-degree murder, unlawful possession of an explosive device and robbery.
O'Connor was arrested in February after his grandmother found his journal where he detailed plans to kill as many people as possible at ACES High School in Everett.
Authorities say O'Connor stockpiled weapons, wanted to be as infamous as other mass shooters and wrote in detail about making pressure-cooker bombs, activating inert grenades and deploying explosives for maximum casualties.
Police stopped him the day before he was to carry out the shooting.
O'Connor now faces up to 28 years in prison.
More news from KIRO 7
- Body found in trunk of missing Auburn man's car
- Doctor: Seattle woman who died of brain-eating amoeba used tap water in Neti pot
- Fire considered suspicious destroys Jehovah's Witnesses hall in Lacey
- New lawsuit aims to close down Seattle's tiny home villages
- Do you have an investigative story tip? Send us an email at firstname.lastname@example.org
Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.