Eric Davi Harris (April 9, 1981 – April 20, 1999) and Dylan Bennet Klebold (September 11, 1981 – April 20, 1999) were the high school seniors who committed the Columbine High School massacre. They killed 13 people and injured 24 others. Both Harris, 18 years old, and Klebold, 17, committed suicide after the killings.