The Nancy Guthrie investigation has hit a new setback: a hair sample recovered from her Tucson, Arizona home failed to produce a usable DNA profile, Pima County Sheriff Chris Nanos confirmed Thursday, July 30 - a day after he told reporters he remained "still positive" the case would be resolved.
"The hair was done... and there was nothing," Nanos told ABC News. The FBI's Phoenix field office confirmed the same finding in a statement, saying "all hair had been resolved and it does not point to a suspect."
Nanos explained that hair rarely yields usable DNA the way other evidence does. "Hair doesn't produce DNA like touch DNA or bodily fluids," he said.
That leaves a mixed DNA sample - drawn from as many as four different people - as the only known biological evidence still under review. Investigators say labs across the country are now working together on it, including the FBI's Quantico facility alongside labs in Kansas, Florida, California, and Arizona.
In a statement, the Pima County Sheriff's Department reaffirmed the case remains active: "The analysis of DNA and digital evidence has been underway for the past six months. This work is complex and time-intensive, but investigators continue to pursue every credible lead."
The update comes just days after Savannah Guthrie released a new video message directly addressing her mother's abductor, telling them it's "never too late to do the right thing." Through six months without answers, the family's faith has remained the visible constant in their public statements.
A combined reward of more than $1.2 million remains unclaimed. Anyone with information is urged to contact the FBI at 1-800-CALL-FBI or Tucson's 88-CRIME tip line at 520-351-4900.
We will continue praying alongside the Guthrie family and following this story as it develops.
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