India, June 20 -- A former FBI agent has proposed her theory concerning the identity of the masked figure recorded by Nancy Guthrie's doorbell camera.

As the search for TODAY Show host Savannah Guthrie's mother nears the five-month milestone on July 1, it remains ongoing. The 84-year-old woman disappeared on February 1. Authorities have not yet identified any persons of interest in the case. In February, the FBI released doorbell footage obtained from Nancy's home in Tucson, Arizona, along with still images of a masked, armed person who was seen on her front porch.

The person was attired in gloves, held a backpack, and donned a gun holster while obstructing the camera. Investigators collected DNA from the gloves and forwarded it for ana...