EVERETT, Wash. – An arrest has been made in the murders of 20-year-old Jay Cook and 18-year-old Tanya Van Cuylenborg, more than 30 years after the bodies of the young couple were found in Washington state's Snohomish and Skagit counties.
Police arrested 55-year-old William Earl Talbott II, of SeaTac, and booked him into Snohomish County jail on one count of first-degree murder in Van Cylenborg’s death. Detectives are still processing evidence and interviewing witnesses in Cook’s death.
“We never gave up hope that we would find Jay and Tanya’s killer,” said Snohomish County Sheriff Ty Trenary. “Yesterday’s arrest shows how powerful it can be to combine new DNA technology with the relentless determination of detectives.”
Just last month, detectives said they'd received more than 90 tips after a $50,000 reward was offered and new sketches were released in the case.
Detectives believe Talbot lived in Woodinville, Washington at the time of the murders, about seven miles from where Cook’s body was found.
Talbott was identified through the use of genetic genealogy, which combines the use of DNA testing with genealogy to establish a relationship between a person and their ancestors. DNA from the case was run against the public genetic genealogy website GEDmatch, and close matches were made to two of Talbott’s relatives.
Police then gathered Talbott’s DNA from an abandoned cup he’d used, and the Washington State Patrol positively matched it to DNA found at the crime scene.
Cook and Van Cylenborg had driven a van down from Saanich, British Columbia, to pick up a part for Cook’s father in Seattle. The last time their whereabouts were known was when they bought a ticket in Bremerton at 10:16 p.m. on Nov. 18, 1987, to take the ferry to Seattle.
On Nov. 24, Van Cuylenborg’s partially-clothed body was found in a Skagit County ditch. Cook’s van was found the next day in a parking lot in Bellingham. His body was found in Snohomish County along Crescent Lake Road the day after that.
Detectives are still asking for the public’s help with specific information:
If you have tips of any kind in the case, call the Snohomish County Sheriff’s Office tip line at (425) 388-3845.