Oregon School Shooting: Teen's Rampage Ends with Heroic Bystander's Intervention

The Oregon teen who gunned down three elementary school students and a teacher in a crazed rampage before he was shot dead by a courageous bystander has been identified.

Follow for live updates on the mass shooting at Silver Rail Elementary in Bend, Oregon

John J. Griffin was armed with his mom’s pump-action shotgun when he opened fire inside Silver Rail Elementary School in Bend on Thursday – killing three kids, the youngest being a 5-year-old, and a teacher, sources told The Post and three senior law enforcement officials told NBC News.