The mother of Dylan Klebold speaks to Diane Sawyer in an exclusive interview to air today in a special edition of 20/20.<br />Sue Klebold gave her first TV interview since her son Dylan and schoolmate Eric Harris committed the deadliest high school shooting in U.S. history.<br />In April 1999, Eric Harris and Dylan Klebold opened fire at Littleton, Colorados Columbine High School, killing 12 students and one teacher and injuring 24 .<br />Susan Klebold, the mother of one of the Columbine shooters, spoke out about her son for the first time in the new issue of Oprahs O Magazine. KCNCs Rick .
