Originally published on December 14, 2013 <br /><br />An 18-year-old student who opened fire at a Colorado high school on Friday (December 13) was reportedly seeking revenge against his teacher because of a disagreement.<br /><br />The shooter, identified as 18-year-old Karl Halverson Pierson, was enrolled at Arapahoe High School. He shot a 15-year-old girl before taking his own life. The conditions of the wounded girl remains critical after surgery.<br /><br />According to Reuters, the targeted teacher immediately fled the school and was not injured. The shooter was later found inside a classroom, dead of a self-inflicted gunshot wound. Authorities found two Molotov cocktail-like incendiary devices in the school. One was detonated by the suspect and the other one was rendered harmless by authorities. <br /><br />The incident came a day before the first anniversary of the mass shooting at Sandy Hook Elementary School in Connecticut, in which a gunman killed 20 children and six adults before killing himself.<br /><br />--------------------------------------------------------<br /><br />TomoNews is your daily source for top animated news. We've combined animation and video footage with a snarky personality to bring you the biggest and best stories from around the world.<br /><br />For news that's fun and never boring, visit our channel:<br />https://www.youtube.com/user/TomoNewsUS<br /><br />Subscribe to stay updated on all the top stories:<br />http://www.youtube.com/subscription_center?add_user=TomoNewsUS<br /><br />Stay connected with us here:<br />Facebook http://www.facebook.com/TomoNewsUS<br />Twitter @tomonewsus http://www.twitter.com/TomoNewsUS<br />Google+ http://gplus.to/TomoNewsUS
