A forensic expert suggested the technology needed to separate mixed DNA found in Nancy Guthrie's home may not exist yet, potentially delaying the investigation.

The DNA found inside Nancy Guthrie's Arizona home following her abduction was 'mixed,' with Pima County Sheriff Chris Nanos admitting this has complicated the case ...

A forensic expert weighs in on the challenges investigators face in separating the mixed DNA evidence found in Nancy ...

The Pima County Sheriff's Department said investigators continue to analyze evidence in the disappearance of Savannah Guthrie's elderly mother Nancy.

The FBI says a glove containing DNA was found about two miles from “Today” show host Savannah Guthrie’s mother and the glove appears to match those worn by a masked man outside her front door in ...