EXCLUSIVE: Sheriff Nanos gives Nancy Guthrie update

Pima County Sheriff Christopher Nanos gives an update on the Nancy Guthrie investigation with Mother's Day and the 100-day mark both just days away. (Credit: Matthew Symons for Fox News Digital)

Pima County Sheriff Christopher Nanos gives an update on the Nancy Guthrie investigation with Mother's Day and the 100-day mark both just days away. (Credit: Matthew Symons for Fox News Digital)