Christopher Wilson agreed to a plea deal Wednesday afternoon in the killing of Wenatchee teen Mackenzie Cowell and was immediately sentenced to more than 14 years in prison.
This development comes less than three days after jury selection began for Wilson's murder trial.
Wilson was sentenced to 14 years, 3 months in prison, the maximum sentence he faced for the killing. He also pleaded guilty to first-degree robbery, as well as second-degree assault on another woman.
Cowell, 17, was killed in February 2010. Her body was dumped in the Columbia River in Crescent Bar.
Police subsequently arrested Wilson for Cowell's murder. Investigators said they found Cowell's blood on Wilson's carpet in his apartment. They also said they found his DNA on a roll of duct tape that was found near Cowell's body.
Wilson and Cowell were both students at the same beauty school. Cowell told her beauty school classmates she would be gone for 15 minutes just before she walked to her car and drove off.
Police found her body four days later. She had been struck in the head, strangled and stabbed to death.