Authorities are warning volunteer search groups to stay off Nancy Guthrie's property and give investigators space after unauthorized searchers recovered a glove and backpack near her home.

DNA samples containing multiple profiles are hindering the use of national databases in the Nancy Guthrie missing person case, according to the Pima County Sheriff’s Department.

Three weeks after 84-year-old Nancy Guthrie disappeared from her home in the Catalina Foothills, authorities have yet to name a suspect or a person of interest

On the scrubby edge of Tucson, where the streetlights thin out and the desert starts to look like open cover, the Nancy Guthrie case keeps refusing to settle into a single, clean storyline. Now it has another one,

Nancy Guthrie was abducted from her home in Tucson's Catalina Foothills at around 02:30 local time on 1 February. Authorities previously said a masked suspect seen on video was described as between 5ft 9in and 5ft 10in tall,

Investigators are looking at a newly found backpack as the suspected kidnapping of 84-year old Nancy Guthrie enters its third week.

Fox reporter Michael Ruiz joined volunteers in the Nancy Guthrie search, sharing strict rules outlined by authorities, who previously discouraged private groups from getting involved

Following Nancy Guthrie's disappearance, speculation has emerged online linking Zack Jaghoub, a former Tucson resident, to the case. Social media users have connected him to a Range Rover involved in the investigation,