Article continues below advertisementIn an unexpected twist ten days into the disappearance of Savannah Guthrie's mom, Nancy Guthrie, investigators released surveillance images of a potential suspect.Four photos show an individual wearing gloves, a mask and a backpack as they appear to tinker with the doorbell camera outside the 84-year-old's Tucson, Ariz., area home.The sheriff's office issued a statement to an outlet following their release on Tuesday, February 10, explaining the "previously inaccessible" images were "recovered from residual data located in backend systems.