Watch: Investigators Broaden Timeline, Search Radius in Nancy Guthrie DisappearanceAuthorities are expanding the search for Savannah Guthrie's mother. After doorbell surveillance footage of a masked individual from outside Nancy Guthrie's Tucson, Ariz., home was released to the public Feb. 10, officials have adjusted their timeline and search radius for the 84-year-old following an outpouring of leads and tips. Two sources with direct knowledge told MS NOW on Feb. 13 that footage and still photos from the doorbell had generated new tips, leading officials to spread search teams farther away from Nancy's home, which has been declared a crime scene. Authorities in the case-which is being jointly handled by the Pima County Sheriff's Department and the Federal Bureau of Investigation (FBI)-have also asked residents in the Tucson area to check their own doorbell surveillance footage dating back to New Year's Day, the sources added. Although residents were first asked to review their security footage from Jan. 31, the day of Nancy's disappearance, the sources noted that investigators had expanded the time frame to include dates before the incident.readAuthorities Reveal New Details About Suspect in Nancy Guthrie Doorbell VideoAs for why officials are looking into the weeks leading up to Nancy's disappearance? The sources told MS NOW that officials are likely trying to see whether a person or people of interest or a suspicious vehicle had been in the neighborhood prior to Nancy's disappearance.
Instagram/Savannah GuthrieIn the doorbell camera video shared by authorities, the individual-donning a ski mask, a backpack, and gloves-approached the front door before turning back to pluck a plant from the garden. The person had then returned to the camera, appearing to hit it. After the footage was released, Savannah shared screenshots from the video, writing on Instagram, "We believe she is still alive. Bring her home." While the search for Nancy continues, keep reading for a breakdown of the matriarch's disappearance. (E! and MS NOW are both part of the Versant Media family.)Nathan Congleton/NBC via Getty ImagesWhen Savannah Guthrie's Mom Nancy Guthrie Was Last Seen Nancy Guthrie-who is mom to Annie Guthrie and Camron Guthrie, in addition to Savannah Guthrie-was last seen by her family at her Tucson, Ariz. home at approximately 9:30 p.m. Jan. 31, per Pima County police. Savannah Guthrie/InstagramNancy Guthrie Reported MissingThe 84-year-old was reported missing by her family Feb. 1 after a concerned friend alerted Nancy's loved ones that she didn't show up for a church service that morning, police confirmed to Today. After her children searched Nancy's property for around an hour, they called authorities and reported her missing around noon. Pima County Sheriff Chris Nanos subsequently detailed the initial investigation, which included homicide detectives, at her house. "You don't typically get the sheriff out at a scene like this, but it's very concerning what we're learning from the house," he told reporters in a Feb. 2 press conference. "This one stood out because of what was described to us at the scene and what we found and located just in looking at the scene." "It's not standard," Nanos continued. "Typically, our homicide team comes out when we have a homicide, a body. This one was done simply because of what the surveyors were telling us."Nathan Congleton/NBCU Photo Bank/NBCUniversal via Getty Images via Getty ImagesNancy Guthrie's Home Declared a "Crime Scene" Following their initial investigation, authorities confirmed they believed a crime took place in Nancy's home. "We believe now, after we processed that crime scene, that we do, in fact have a crime scene," Nanos shared during a Feb. 2 press conference. "We're asking the community's help. This community has always stepped up to help us solve some pretty tough crimes. I'm looking for that again." The sheriff cited Nancy's limited mobility-she "couldn't walk 50 yards by herself"-a giveaway for concluding that foul play may have been involved in her disappearance. "We know she didn't just walk out of there, that we know," he said, adding, "There are other things at the site, at the scene, that indicate there was a-she did not leave on our own." Don Arnold/WireImageNancy Guthrie's Health Condition Revealed, Medication Needs for Survival As the search for Nancy continues, authorities emphasized that she needs to take daily medication for her survival, which she is likely without. "This is an 84-year-old lady who suffers from some physical ailments, has some physical challenges, is in need of medication," Nanos shared at the Feb. 2 press conference, "medication that if she doesn't have in 24 hours, it could be fatal." "So, we make a plea to anyone who knows anything about this, who has seen something, heard something, to contact us," he continued. "Call 911. We don't need another bad, tragic ending. We need some help." While Nancy's physical health has been limi