Eye-popping new theory behind disappearance of Savannah Guthrie's mom floated by expert

A law enforcement and intelligence expert on Monday revealed a new theory into the disappearance of journalist and "Today" host Savannah Guthrie's 84-year-old mother in Tucson, Arizona.

CNN law enforcement analyst John Miller suggested that the disappearance of Nancy Guthrie could have been "an abduction" that is potentially tied to "a well-known figure," her daughter. The theory could involve a "ransom," or something of that nature, Miller explained. Investigators have not released further information about any details tied to this suggestion.

Authorities called the circumstances involving Nancy's disappearance suspicious, and said that homicide investigators were examining a crime scene at her home.

"We do in fact have a crime," Pima County Sheriff Chris Nanos said during a press conference Monday.

She was last seen on Jan. 31, and her family was notified that something was wrong when she did not attend church on Sunday morning. Further details about her disappearance and what cops found at the home were not released.

Nanos said that authorities were relying on the community and technology to find Nancy. She has limited mobility and needs medication, which, if she doesn't have in 24 hours, could be fatal.

"She did not leave on her own, we know that," Nanos said.

Authorities found Guthrie's phone, and investigators were looking at cameras located at the home, asking community members to help provide any information.

Her family was cooperating with authorities to investigate her disappearance. The incident was not related to mental illness.

"This is not dementia-related. She is sharp as a tack," Nanos added.

Anyone with information was asked to contact the Pima County Sheriff's Department at 520-351-4900.