Savannah Guthrie's call for tips comes after new reporting that the second ransom note that was sent to her family indicated that Nancy Guthrie had passed away after she was abducted, a federal law enforcement source close to the case told Fox News on Monday.
The note is believed to have indicated that Guthrie was "buried with nature," according to the source.
Authorities haven't confirmed or denied the two original notes' authenticity, nor have they identified who sent them. The source told Fox News that no money or Bitcoin was sent to the individuals who sent the note, which makes it difficult for investigators to track down who sent them.
Arizona's Family reported that the second ransom note emailed to KOLD, its sister station in Tucson, said that Nancy Guthrie had died and added that her abductors "never intended to hurt her."
"She perished shortly after she was taken," "she is buried in nature now," and "We are truly sorry" were also included in the second ransom note.
Pima County Sheriff Chris Nanos told Fox News Digital on Monday that the FBI has looked into numerous ransom demands since the beginning of the investigation, with some being bogus and others with the potential to be real.
Jason Pack, a retired FBI supervisory special agent and former FBI hostage negotiator, told Fox News Digital that an apology inside a ransom communication is unusual.
"People who have leverage do not apologize. They demand," Pack said. "A rambling, labored apology for an inadvertent death suggests something went wrong that was not part of the plan."