Hair sample from Nancy Guthrie scene couldn't be used for DNA: sheriff

Scientists weren't able to generate a DNA profile from a hair sample collected from Nancy Guthrie's home, Pima County Sheriff Chris Nanos told Fox News Digital Thursday — but it still may be useful to investigators. (Kat Ramirez for Fox News Digital)

Scientists weren't able to generate a DNA profile from a hair sample collected from Nancy Guthrie's home, Pima County Sheriff Chris Nanos told Fox News Digital Thursday — but it still may be useful to investigators.