New details about the timeline in the case of Savannah Guthrie's missing mother are revealed in police dispatch audio.

Authorities launched an investigation into the disappearance of 84-year-old grandmother Nancy Guthrie from her Tucson-area home after family members reported her missing on a Sunday.

Dispatch audio revealed that Nancy, who has significant health issues, including a pacemaker, disappeared sometime after returning home on Saturday evening. Her personal devices, like her phone and smartwatch, were found inside the house.

Sheriff Chris Nanos confirmed that investigators suspect Nancy did not leave willingly, leading the case to transition from a search to a full investigation. Authorities are reviewing evidence, seeking tips, and analyzing surveillance footage.

Nancy's daughter, Savannah Guthrie, traveled to Arizona to support her family and appealed for information from the public. Officials stress that even minor details could aid in unraveling the mystery.

As the investigation continues in Pima County, loved ones and the community await answers, hoping for new evidence to shed light on Nancy's whereabouts during the crucial overnight period.