A man is being questioned over the disappearance of Nancy Guthrie - hours after images were released of an "armed individual" at her front door. The suspect was detained on Tuesday during a traffic stop south of Tucson, Arizona, said Pima County Sheriff's Department. However, it is unclear if it's the same person seen on doorbell cam video released earlier. The FBI and the sheriff's department said a search was also taking place at a location in Rio Rico, 60 miles south of Tucson, according to