Eric David Harris (April 9, 1981 – April 20, 1999) and Dylan Bennet Klebold (September 11, 1981 – April 20, 1999) were an American mass murderer duo who perpetrated the Columbine High School massacre on April 20, 1999. Harris and Klebold killed 13 people and wounded 24 others at Columbine High School, where they were seniors, in Columbine, Colorado. After killing most of their victims in the school's library, they later committed suicide. At the time, it was the deadliest high school shooting in U.S. history. The ensuing media frenzy and moral panic following the massacre led to "Columbine" becoming a byword for school shootings, and becoming one of the most infamous mass shootings ever perpetrated.