United Kingdom, Feb. 13 -- The FBI has revealed "new identifying details" about a suspect in Nancy Guthrie's disappearance.

The 84-year-old mother of Today show host Savannah Guthrie has been missing since February 1, and both the Pina County Sheriff's Department and the FBI Phoenix office are continuing to investigate the case, with new details now made public regarding an individual previously seen in a mask on doorbell camera footage.

In a statement on X, FBI Phoenix said: "Today, the FBI is increasing its reward up to $100,000 for information leading to the location of Nancy Guthrie and/or the arrest and conviction of anyone involved in her disappearance.

"New identifying details about the suspect in the kidnapping of Nancy Guthrie...