Eric David Harris and Dylan Bennet Klebold were an American mass murderer duo who perpetrated the Columbine High School massacre, where they killed 13 students and one teacher, and wounded 23 others. After killing most of their victims in the school library, the two died by suicide. At the time, the attack was the deadliest high school shooting in United States history. The ensuing media frenzy and moral panic turned "Columbine" into a byword for school shootings, and the event into one of the most infamous mass shootings.