MANHATTAN, Kan. (AP) -- A Kansas teenager who admitted shooting and killing a 14-year-old Manhattan High School classmate has been sentenced to nearly 22 years in prison.

KMAN-AM reports (http://bit.ly/YgqxHw ) the mother of Tyler Dowling told 16-year-old Cole Drake in court Monday she hopes her son's voice will haunt him every day and night.

Drake was initially charged as an adult with first-degree murder. He avoided a trial last month by pleading no contest to second-degree murder, robbery and numerous counts of vehicle burglary.

Dowling was found dead in a field in April 2011.

Authorities said Drake told investigators the two were out breaking into cars the night of the shooting. He said he accidentally shot Dowling once, then shot him again because he didn't want Dowling to tell anyone what he did.