Prosecutors said Jason Beeson gave a co-defendant the knife used last October to kill Matthew Samlock.
The Olympian reported that Beeson pleaded guilty to second-degree murder.
The co-defendant, 21-year-old Jakob Curtis, pleded guilty to first-degree murder and was sentenced in February to 33 years in prison.
More Northwest Headlines
Member of Yakima police task force shot 2:55 p.m. Family of unarmed man killed by police in Washington sues 2:54 p.m. Washington Supreme Court rules against Backpage.com 11:12 a.m. Train derails in Tacoma after hitting stopped locomotive Indicted Washington state auditor gets new legal counsel 1:14 p.m. Man, woman killed at Oregon mobile home park; no suspects 1:13 p.m. Female inmate at Pierce County Jail dies 1:10 p.m. Ore. police look for pickup involved in possible kidnapping 1:09 p.m.
Our new comment system is not supported in IE 7. Please upgrade your browser here.