Nancy Guthrie: 100 days since Savannah Guthrie's mom went missing

Key Points:

• Nancy Guthrie, mother of NBC "Today" host Savannah Guthrie, has been missing since January 31 after being taken from her home against her will; searches and investigations continue with no resolution after 100 days.
• Key timeline details include Nancy being dropped off at her home around 9:48 p.m. on January 31, with her doorbell camera disconnecting at 1:47 a.m. on February 1 and her pacemaker app showing disconnection at 2:28 a.m.; she was reported missing later that day.
• The case has attracted national and international media attention, including ransom notes demanding cryptocurrency sent to outlets like TMZ, and the FBI and Pima County Sheriff's Department have released images of a masked alleged abductor.
• Savannah Guthrie has publicly renewed her plea for information, offering a $1 million reward and encouraging anyone with knowledge to contact the FBI or the Pima County Sheriff's Department tipline.
• The investigation has brought scrutiny to Pima County Sheriff Chris Nanos for his handling of the case, with calls for sworn testimony and possible disciplinary action, amid conflicting reports about FBI involvement.