The three members of a Bellevue family found dead in their home had been bludgeoned and stabbed, the King County medical examiner’s office said Tuesday.
A fourth family member, found dead in a nearby park, had been strangled.
The victims found in the house on Sunday were William Angus Wilson, 52, and Rosalie “Rose” Wilson, 46, and their daughter, Julia Jean Wilson, 17, medical examiner’s investigator Nick Fletcher said.
An older daughter, Kimberly Ann Wilson, 20, was found dead earlier Sunday in the Woodridge Water Tower Park across from a grade school in this Seattle suburb.
It was identification on Kim Wilson’s body that led police to the family home and the discovery of the other slayings.
Police believe the killer had a connection to the family, Lt. Bill Ferguson said.
Ferguson said no weapon had been found, no motive had been established and no individual had been targeted.