Authorities have discovered three people who were fatally shot, two victims hidden under debris and another female one was inside a shed.
Police discovered the bodies when they were sent to the home near the waterfront city of Port Angeles for a welfare check.
Investigators found the door to the home ajar and then found the bodies of Darrell C. Iverson, 57, and his son Jordan D. Iverson, 27, covered by tarps and debris in front of the house, Clallam County Sheriff Bill Benedict said. The elder Iverson owned the home, county documents say.
The body of the younger man's girlfriend, 26-year-old Tiffany A. May, was discovered later in a locked shed close to the home. Investigators believe all three were killed Dec. 26 by someone they knew, Benedict said.
authorities do not have any suspects but are looking to track down persons of interest, including others who may have been living at the property.
the sheriff said none of those people were there when deputies first came to the house Monday afternoon and found the bodies of the Iversons.
They also found bullet casings everywhere.
Detectives are now searching for a motive and a murder weapon.
"We're doing everything we can to do this correctly," sheriff's Staff Sgt. John Keegan said. "We'll take this crime scene apart, piece by piece."
Investigators are asking the public's help concerning the killing, anyone with useful information can call the following number: 360-417-2540.
