13-year-old Cade Poulos from Oklahoma went to school dressed up as Two-Face before shooting himself in the middle of the crowded hallway.

It was Superhero Dress-up Day. And just as classes were about to begin, Poulos showed up to school as a Batman villain. Without any warning, the middle-schooler shot himself and committed suicide in the middle of all the students.

No one else was hurt, but for the rest of the day, Stillwater Middle School was on lockdown.

Poulos was an exceptional student and did not have any disciplinary issues. Reasons for his suicide is still under investigation although students have revealed that Poulos was a victim of bullying.