(Beaverton, OR) -- Authorities say they've found a "vehicle of interest" in their investigation of the death of a Vancouver woman. Thirty-seven-year-old Lilia Cosco-Ortiz was found dead in a blueberry field on October 4th after she failed to return from a drive to the coast. Yamhill County authorities found a white 2003 Toyota pickup unattended near 170th and Merlo Road in Beaverton on October 11th. Officials say person of interest Victor Melcher Villalba, who was in a relationship with Cosco-Ortiz, was seen driving the vehicle but hasn't been found.