Police are searching for 48-year-old Bobby Bilderback, a man twice convicted for homicide.
Police say he is on the run after being released from prison.
Bilderback is believed to be in the Spokane area, possibly driving a silver 2006 Hummer with a Washington state license plate.
The Whitman County Sheriff's Office has an arrest warrant out for Bilderback, who threatened someone with a gun during an argument at his home in Malden earlier this week.
He is wanted for first degree felony assault and unlawful possession of a firearm.
Bilderback was sentenced to five and a half years in prison back in August 2013 for controlled substance homicide and unlawful disposal of human remains.
He and two other suspects provided 17-year-old Donavin Stampert with methamphetamine in March 2013. Stapert died of an overdose and the three put his body into a safe, and buried it in Spokane County.
Bilderback had spent 23 years in prison prior to the incident, for first degree murder in Chelan County in 1987.
(story: KHQ.com; photo: Whitman County Sheriff's Office)