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.

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,

A Mexican nonprofit known for finding missing persons and clandestine graves has joined the search for Nancy Guthrie in southern Arizona.

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

Pima County Sheriff Chris Nanos is spearheading the local investigation into Nancy Guthrie's disappearance, not without some controversy. Nanos said he has 400 personnel working the case, which is now in its 22nd day.

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,