More than 11 weeks after 84-year-old Nancy Guthrie disappeared from her Tucson, Arizona home, investigators have sent DNA evidence, including hair samples to the FBI for advanced testing.
In a statement, the sheriff's department clarified that they have worked with the FBI since the beginning of the investigation, and DNA analysis remains ongoing.
The FBI has received DNA evidence collected from Nancy Guthrie's home, including results from a hair sample, and is continuing to analyze it.
Earlier in the case, a DNA sample was sent to the FBI to check in its CODIS database, but it did not find any match and officials later ruled out any connection.
Experts believe a mixed DNA sample may include DNA from three or more people, and at least one of the DNA samples in the mix belongs to a male.
