FBI Analyzes Blood-Stained Evidence in Search for Nancy Guthrie

Chris Nanos and the FBI are analyzing blood-stained gloves found in the Tucson desert as the search for Nancy Guthrie enters its third week.Investigators are comparing the evidence to security footage of a masked intruder seen at the home of Nancy Guthrie, the mother of Savannah Guthrie, on the day she disappeared.While DNA from the scene has not yet yielded a match in the FBI database, officials continue to process cell phone data and video to identify the suspect.