In a dramatic escalation, the FBI has joined a desperate search for Nancy Guthrie, the 84-year-old mother of Today show co-anchor Savannah Guthrie, who vanished five days ago. Pima County Sheriff Chris Nanos, standing alongside FBI Special Agent Heith Janke at a tense press conference, vowed to pursue every lead 'aggressively' as a $50,000 reward was posted for information.

The case took a sinister turn with the emergence of a ransom note sent to media outlets, including TMZ and Tucson's KOLD News. KOLD anchor Mary Coleman revealed on CNN that the email contained 'chilling, sensitive details' known only to someone involved in Nancy's disappearance—prompting immediate handover to law enforcement. 'This isn't a hoax,' Coleman emphasized, describing specifics that sent shivers through investigators.

Nancy Guthrie, mother of Savannah Guthrie, whose disappearance has sparked an FBI-led manhunt. Savannah Guthrie/Instagram

FBI Agent Janke confirmed the note's authenticity, warning of impostors but highlighting that this one included a dollar amount, deadlines (initially 5 p.m. Thursday, with a follow-up on Monday), and exclusive information that 'distinguishes it from prior fraud attempts.' Detectives are now racing to trace the email's IP address as the clock ticks down.

Despite the urgency, Sheriff Nanos admitted no suspects have been identified and announced an end to scheduled press conferences unless breakthroughs occur. The Guthrie family—including Savannah, Annie, and Camron—has pleaded publicly for Nancy's safe return, sharing emotional appeals on social media amid the ransom note scrutiny.

Savannah Guthrie and family issue a heartfelt plea as FBI hunts for missing mom Nancy. Savannah Guthrie/Instagram

The collaboration between local authorities and the FBI underscores the high-stakes nature of the search, with the reward aimed at spurring tips from the public. Janke urged caution, noting that while the note is real, scammers may try to capitalize on the tragedy.

Savannah Guthrie with her mother Nancy on the 'Today' set in 2023, now at the center of a nationwide search. Nathan Congleton/NBC via Getty

If you have any information, contact the Pima County Sheriff’s Department at 520-351-4900, call 88-CRIME or 520-882-7463, use the P3TIPS app, or visit 88crime.org. All tips are anonymous.