Armed with 10 pipe bombs, a chainsaw and a sword with a 2-foot blade, a mad teen's plans to destroy the world (okay, fine - destroy his schooll) were spoilt by a teacher.

Shortly after two pipe bombs were detonated in Hillsdale High School, San mateo, CA, an English language development teacher Kennet Santana tackled the 17-year-old boy. With the help of a few other faculty members, they managed to pin the boy down until police arrived.

Naturally, the kid was described as "quiet," "shy," and "reclusive." They say, it's always the person you'd least suspect. But you never really hear about the loud outgoing class clown going all psycho on his classmates.

[via Gizmodo]