India, Aug. 18 -- A former investigator from Colorado has stated that the recurring grammatical peculiarities and sentence structures found in the ransom notes related to the Nancy Guthrie case may provide crucial insights for identifying a suspect.

Lisa Miller discussed with Fox News Digital the two letters that were made public by the Pima County Sheriff's Department last month. The initial note requested millions in Bitcoin cryptocurrency for Nancy's return, whereas the subsequent note asserted that Nancy had "perished" and was "buried in nature."

Nancy, the 84-year-old mother of Savannah Guthrie from Today, was reported missing on February 1, with authorities suspecting she was taken from her residence in Tucson, Arizona.

Law enfor...