TUCSON, Ariz. — Authorities have escalated their investigation into the unsettling disappearance of Nancy Guthrie, the 84-year-old mother of NBC's 'Today' show host Savannah Guthrie. Law enforcement officials, including the FBI, have sealed off a road approximately two miles from Nancy's Tucson-area residence, signaling the seriousness of the inquiry.

Since February 1, when Nancy was reported missing, investigative activities have surged, following the discovery of her blood on the front porch of her house. Law enforcement has reported that ransom notes were sent to various news outlets, but the associated deadlines for payment have already lapsed.

Authorities are particularly concerned about Nancy’s health, as she has a pacemaker and needs daily medication for high blood pressure and heart issues. A sheriff’s dispatcher has expressed alarm over her medical needs during ongoing briefings.

As the search continues, investigators are meticulously reviewing surveillance footage and have sifted through thousands of tips—over 13,000 from the FBI alone—and have responded to at least 18,000 calls related to the case.

Recently, law enforcement released chilling video footage showing an armed, masked individual at Nancy’s doorstep on the evening she vanished, offering a crucial glimpse into the events surrounding her disappearance. Experts indicate that this footage could yield significant clues to aid in her recovery.

With growing urgency and public interest in the wellbeing of Nancy Guthrie, investigators are hopeful that fresh evidence and tips will lead them closer to resolving this distressing case.