The note was sent last week to CNN affiliate KGUN, which is based in Tucson, Arizona, where the 84-year-old was last seen a week ago.
“Law enforcement has not confirmed the ransom amount referenced in the letter,” KGUN wrote on X.
KGUN and other outlets have previously reported receiving alleged ransom notes demanding millions of dollars in Bitcoin to free Nancy Guthrie.
In a video from Savannah Guthrie, who presents the NBC News show Today, and her siblings released on Saturday, the broadcaster addressed her mother’s kidnappers, saying the family had “received your message” and “will pay”.
“We beg you now to return our mother to us, so that we can celebrate with her,” Ms Guthrie said in the clip.
“Our mom is our heart and our home,” she added. “She’s 84 years old. Her health, her heart, is fragile. She lives in constant pain. She is without any medicine. She needs it to survive, and she needs it not to suffer.”
Heith Janke, the FBI’s Phoenix special agent in charge, said at a press conference last week that a prior ransom note set two deadlines: last Thursday and today.
The FBI has appealed for information and offered a reward of up to $50,000 for any details that could lead to the recovery of Nancy or arrest of anyone involved in her disappearance.
Since then, US media outlet TMZ received a ransom note from the alleged captor. However, police have still not been able to verify whether the notes are real.
US Attorney for the District of Columbia Jeanine Pirro said yesterday that the purported kidnappers appeared “very sophisticated” about sending messages while using digital tools to conceal their identity.
“I really believe there’s a backdoor communication going on here that we don’t know about,” she added.
The FBI and the Pima County Sheriff’s Department are investigating the case and have not publicly named any suspects.
Investigators searched Savannah Guthrie’s sister Annie’s home late on Saturday night for evidence, after a previous search at the location.
“We have some clues that I think are very strong, and I think we could have some answers coming up fairly soon,” President Trump said of the case on Friday.
“We have some things I think that will maybe come out reasonably soon from DOJ or FBI or whoever.”
Nancy Guthrie was last seen the evening of January 31, after family members dined with her, dropped her home, and played games together. The following day, family learned she hadn’t attended church and eventually reported her missing.