(CBS) LINCOLN CITY, Ore. - Authorities in Washington say suspected killer Michael "Chadd" Boysen may be holed up in a motel room in Lincoln City, Ore., CBS affiliate KIRO reports.
Police in Oregon have the motel surrounded, according to King County Sherriff's Office spokeswoman Cindi West.
Lt. Jerry Palmer, of the Lincoln City Police Dept., said Boysen, 26, who is accused of killing his grandparents, is believed to be at the West Shore Motel in Lincoln City and is reported to have registered at the motel under his own name, the station says.
Police said they received a tip from the night clerk at the motel who recognized Boysen from news reports when he checked in Monday night.
When the clerk checked the motel roster, she reportedly saw Boysen's name and called police early Tuesday.
When police arrived, they evacuated the motel, surrounded it, and began negotiations with the man believed to be Boysen.
Lincoln City Police Chief Keith Kilian said when officers yelled into the room, the man inside said, "Go away!," the station reports.
SWAT officers are at the scene as negotiations continue.
Boysen is accused of murdering his grandparents, who were in their 80s, on Friday, the same day he was released from prison. Police said his grandparents had given him a welcome home party that night.
Their bodies were found by their daughter inside their Renton, Wash. home on Saturday. Police have not said how they died.
Police described Boysen, who has been jailed six times, as an extreme danger to both law enforcement and the public.
Investigators said there was evidence Boysen was trying to stockpile weapons and that he threatened to go on a killing spree.
Those who know Boysen said he was addicted to prescription drugs and went to prison for stealing from his family and local pharmacies.
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