Article continues below advertisementNancy Guthrie's Arizona home, where Savannah Guthrie's missing mom raised her three children - and where she was allegedly abducted - "has been processed and has been available" to her family since the first week she vanished, authorities revealed as the case continues into its fourth week. Investigators reportedly gathered evidence early on, photographing the scene, dusting for fingerprints and collecting anything that could help the case.