India, Feb. 15 -- As the search for Nancy Guthrie, the 84-year-old mother of "Today" show host Savannah Guthrie, entered its third week, federal authorities, who have characterized the case as a possible kidnapping, have disclosed additional information regarding a suspect in her disappearance.

Following an examination of doorbell camera footage from Guthrie's residence in Tucson, Arizona, and performing a forensic analysis, the Federal Bureau of Investigation (FBI) on Thursday released "new identifying" details concerning the suspect's appearance, which included a backpack that the individual was carrying.

"The suspect is described as a male, approximately 5'9" - 5'10" tall, with an average build. In the video, he is wearing a black, 2...