Kip Kinkel, 17, abandoned an insanity defense and pleaded guilty today to murdering his parents at home and then killing two classmates in a rampage last year at Springfield's Thurston High School.
Kinkel's plea to four counts of murder and 25 counts of attempted murder came just three days before his trial.
He could get a life prison sentence. Because he was just 15 at the time, he never faced the death penalty. His attorneys had hoped to spare him life in prison by proving he was insane.
Kinkel's rampage began May 20, 1998, after he was expelled from school for having a stolen pistol in his locker. He shot and killed his parents.
The next day, dressed in a long trench coat, he walked into the school cafeteria just before classes began and calmly pulled a .22-caliber semiautomatic rifle from his coat. He squeezed off 50 rounds in just 90 seconds.
Classmates Ben Walker, 16, and Mikael Nickolauson, 17, were killed. The shooting ended when several boys tackled Kinkel as he tried to reload.