India, Nov. 10 -- A second ransom note sent to a Tucson, Arizona, television station shortly after Nancy Guthrie went missing claimed she died shortly after her abduction, sources familiar with the investigation told ABC News. Savannah Guthrie's mother remains missing after disappearing from her Tucson home in the early hours of February 1.

Various ransom notes were sent to the media after Nancy went missing. Her family received two notes that were sent to Tucson media outlets that investigators believed may have been credible and that the FBI had tried to trace their origin. While the first note demanded cryptocurrency for Nancy's return, the second said she died shortly after she was abducted, adding that she was buried in nature.

Sav...