India, May 24 -- Nancy Guthrie Case Latest Update: The disappearance of Nancy Guthrie, the 84 year old mother of Today co-host Savannah Guthrie, continues to haunt investigators nearly four months after she vanished from her Tucson, Arizona home with no arrests made and more than 50,000 leads under review, former FBI agent Jennifer Coffindaffer has now outlined four disturbing theories about what may have happened.

Her comments come as investigators continue analyzing DNA evidence, surveillance footage, digital records and alleged ransom communications linked to the high-profile case while authorities have also confirmed that the investigation remains active and has not been classified as cold.

Nancy Guthrie Case Latest Update: Ex-FBI A...