Everything we know about the Nancy Guthrie ransom notes

• Authorities believe Guthrie, 84, was abducted sometime overnight, between Jan. 31 and Feb. 1, as she was last seen at about 9:30 p.m. that Saturday.
• While acknowledging the reports, the Sheriff's Office wouldn't confirm the validity of the alleged ransom notes.
• The note received by TMZ demanded millions in Bitcoin cryptocurrency and provided a specific Bitcoin address.

CBS News reported that its Tucson affiliate, KOLD News, received a ransom note for Nancy Guthrie, the mother of "Today" co-host Savannah Guthrie, as the search for the missing 84-year-old widened.

According to CBS, Pima County Sheriff's Department investigators analyzed the letter, are taking it seriously and shared it with the FBI, whose agents decided to share it with the NBC host.

The note, which KOLD received Feb. 2, "contained specific details about the home and what Nancy Guthrie was wearing that night," CBS reported.

The report added that investigators wanted to keep the note private, and the Tucson station agreed not to broadcast any information about it.

But TMZ was first to report Feb. 3 that it received the alleged letter demanding payment for the release of Nancy Guthrie, who was reported missing from her Arizona home, just north of Tucson, on Feb. 1.

Pima County Sheriff Chris Nanos said TMZ obtained a copy of the note and reported on it before contacting his office, he told CBS.

The USA TODAY Network has not viewed or substantiated the validity of either note.

Authorities believe Guthrie, 84, was abducted sometime overnight, between Jan. 31 and Feb. 1, as she was last seen at about 9:30 p.m. that Saturday.

TMZ’s report came less than an hour after Nanos told reporters that investigators with his office and the FBI were tracking down any and all leads, but could not confirm whether Guthrie's disappearance was a random incident or targeted.

While acknowledging the reports, the sheriff's office wouldn't confirm the validity of the alleged ransom note.

"We are taking all tips and leads very seriously," the office said. "Anything that comes in goes directly to our detectives, who are coordinating with the FBI."

Who got a ransom letter for Nancy Guthrie?

TMZ reported that it received the letter the morning of Feb. 3.

Afterward, Mary Coleman, a news anchor with KOLD News in Tucson, posted on social media to report that her newsroom also got the ransom note.

What does the Guthrie ransom note sent to TMZ say?

TMZ kept details of the note vague. The note, the outlet reported, demanded millions in Bitcoin cryptocurrency and provided a specific Bitcoin address. TMZ reported that it has verified the validity of the address.

According to the outlet, the letter included a deadline, "and an element of 'or else.'"

How did the Pima County Sheriff's Department respond?

TMZ and Coleman reported that both newsrooms have forwarded the note to the Pima County Sheriff's Department.

On Feb. 3, the sheriff's department said that it was aware of the alleged letter and that it would continue to pursue all tips it receives.

It went on to encourage anyone with information to reach out to authorities via the Pima County Sheriff's evidence portal. People can also call the office at 520-351-4900.