in search Nancy GuthrieDNA expert and genetic genealogist CeCe Moore said she believes investigators should return to the missing woman’s Tucson home to look for more DNA evidence. Moore stressed that DNA on doorbell camera footage of a masked man seen biting a flashlight needs to be examined with extra caution.
Moore explained that while crime scene investigators may have collected a large number of DNA samples, they may have missed key evidence, such as saliva from a bite flashlight. She added that this could be a “reliable” source of the perpetrator’s DNA even weeks after the incident.
Learn more | Nancy Guthrie case: Former FBI agent reveals why Savannah Guthrie’s mom was ‘more vulnerable’ to attack
“The DNA is pretty solid,” Moore said, according to The Nation Today. “So there’s definitely some DNA there, and specifically, I do think saliva is the most likely possibility because he seemed to have something in his mouth that was biting the flashlight.”
“We have some DNA that we think is still viable”
Pima County Sheriff Chris Nanos had previously said the case was “far removed” from cold cases, adding, “We have some DNA We think it’s still feasible. The sheriff made the remarks during a 45-minute interview on The Bill Buckmaster Show on KVOI AM 1030 with longtime Tucson host Bill Buckmaster and Arizona Daily Star columnist Tim Steller.
Speaking about the investigation, Nanos said the Sheriff’s Department is still working with the FBI, labs and forensic examiners across the country and “we still have thousands (hours) of video footage to sort through.”
“This case will get us there. We let the evidence show us the way, and that’s what we base everything on,” Nanos said. “Right now, it’s all speculation. We have nothing in front of us to prove ‘who did this and this is why’.”
