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TUCSON, Ariz. — <\/span>It’s been a week since \u201cToday\u201d show host Savannah Guthrie<\/a> ‘s mother disappeared from her home in Arizona in what authorities say was a kidnapping. <\/p>\n Investigators have been examining ransom notes and looking for evidence but have not named a suspect. On Friday, officers returned to 84-year-old Nancy Guthrie<\/a> ‘s home near Tucson and to the surrounding neighborhood to continue their search<\/a>.<\/p>\n Here\u2019s what to know about the case:<\/p>\n Family members told officials they last saw Guthrie<\/a> at 9:48 p.m. on Jan. 31 when they dropped her off at home after they ate dinner and played games together. The next day, family learned she didn’t attend church. They reported her missing after they went to check on her. <\/p>\n Guthrie has a pacemaker and needs daily medication. Her family and authorities are worried her health could be deteriorating by the day.<\/p>\n Authorities think Guthrie was taken against her will<\/a> from her home in an upscale neighborhood that sits on hilly, desert terrain. DNA tests showed blood on Guthrie\u2019s front porch matched hers, the county sheriff has said. <\/p>\n Investigators found her doorbell camera was disconnected early Sunday and that software data recorded movement at the home minutes later. But investigators haven\u2019t been able to recover the footage because Guthrie didn’t have an active subscription to the service.<\/p>\n Pima County Sheriff Chris Nanos told The Associated Press<\/a> in an interview that investigators have not given up on trying to access those images. <\/p>\n \u201cI wish technology was as easy as we believe it is, that here\u2019s a picture, here\u2019s your bad guy. But it\u2019s not,\u201d Nanos told the AP on Friday. \u201cThere are pieces of information that come to us from these tech groups that say \u2018This is what we have and we can\u2019t get anymore.\u2019\u201d<\/p>\n The president of the Catalina Foothills Association, a neighborhood group, thanked residents in a letter for being willing to speak with law enforcement, share camera images and allow their properties to be searched. <\/p>\n At least three media organizations reported receiving purported ransom notes, which they handed over to investigators. Authorities made an arrest after one ransom note turned out to be fake, the sheriff said.<\/p>\n It\u2019s unclear if all of the notes were identical. Heith Janke, the FBI chief in Phoenix, said details included a demand for money with a Thursday evening deadline and a second deadline for Monday if the first one wasn\u2019t met. At least one note mentioned a floodlight at Guthrie\u2019s home and an Apple watch, Janke said.<\/p>\n Investigators said they are taking the notes seriously. <\/p>\n On Friday, KOLD-TV in Tucson said it received a new message, via email, tied to the Guthrie case. The station said it couldn\u2019t disclose its contents. The FBI said it was aware of a new message and was reviewing its authenticity. <\/p>\n Concern about Guthrie\u2019s condition is growing because authorities say she needs daily medicine that\u2019s vital to her health. She has a pacemaker, high blood pressure and heart issues, according to sheriff\u2019s dispatcher audio on broadcastify.com<\/a>.<\/p>\n Guthrie’s children recorded two separate video messages<\/a> to their mother’s abductor and posted them publicly on social media. <\/p>\n Savannah Guthrie filmed a sometimes emotional message<\/a> on Wednesday asking the kidnapper for proof their mother was alive. She noted that technology today allows for the easy manipulation of voices and images<\/a> and the family needed to know \u201cwithout a doubt\u201d that she is alive and in the abductor’s hands. <\/p>\n Police have not said that they have received any deepfake images of Nancy Guthrie.<\/p>\n Savannah Guthrie described her mother as a \u201ckind, faithful, loyal, fiercely loving woman of goodness and light\u201d and said she was funny, spunky and clever. <\/p>\n \u201cTalk to her and you\u2019ll see,\u201d she said. <\/p>\n She spoke some words directly to her mom, saying she and her siblings wouldn’t rest until they’re all together again. <\/p>\n The FBI has offered a $50,000 reward for information about Guthrie\u2019s whereabouts.<\/p>\n The White House said President Donald Trump called and spoke with Savannah Guthrie on Wednesday. He posted on social media that he was directing federal authorities to help where they can.<\/p>\n On Friday night, he told reporters flying with him to his Florida estate on Air Force One that the investigation was going \u201cvery well\u201d and investigators had some strong clues. <\/p>\n The kidnapping is the latest abduction to attract the American public’s attention<\/a>.<\/p>\n Other notorious kidnappings in U.S. history have included the son of singer Frank Sinatra, the granddaughter of newspaper magnate William Randolph Hearst and the 9-year-old girl for whom the AMBER Alert was named.<\/p>\n<\/div>\n