Six months after the suspected abduction of 84-year-old Nancy Guthrie from her Tucson, Arizona home, Pima County Sheriff Chris Nanos expressed optimism about the investigation's progress. While no arrests have been made and no suspects publicly identified, Nanos stated that investigators are actively reviewing "tens of thousands" of video clips.
Detectives are meticulously sifting through the vast amount of video footage, categorizing clips by elements like vehicle color to enable rapid reassessment if new evidence emerges. The FBI has also been involved, having removed home security cameras from Guthrie's property in February.
Nanos highlighted the continued assistance from major technology companies, drawing a parallel to Google's role in recovering the only known images of a suspect from a Nest doorbell camera. He indicated that other corporations are providing specialized technology and expertise to aid the investigation.
The sheriff also addressed criticisms regarding cooperation with the FBI, asserting a close working relationship. He noted that FBI agents have been part of a joint task force on the case since its inception, with daily coordination between agencies.
Regarding forensic evidence, Nanos confirmed that a DNA profile could not be obtained from a hair sample recovered inside the home. However, he emphasized that advancements in technology mean other genetic evidence is still being tested, and the hair itself could be used for comparison if a suspect is identified. Investigative genetic genealogy is also being employed.
Authorities have released two purported notes that may have been sent by one of Guthrie's abductors. The notes share a "unique linguistic style," and investigators believe the writer may be identifiable by someone who knows them. The Pima County Sheriff's Department and the FBI are seeking public assistance in identifying the individual behind these notes and the masked man seen in the doorbell video.
Nanos stated that no individuals are permanently ruled out in the investigation, as new evidence could shift focus. He previously indicated that while the family is not considered suspects, that designation could change if new information comes to light.
Rewards totaling over $1.2 million have been offered for information leading to a resolution of the case, none of which have yet been claimed. Anyone with information is urged to contact the Pima County Sheriff's Department, the FBI, or anonymously through a crime tip line.