Two volunteer search groups looked for Nancy Guthrie on Sunday. One of them found a backpack, which the Pima County Sheriff’s ...

The search for 84-year-old Nancy Guthrie intensifies as local law enforcement and volunteer groups clash over investigation tactics.

Amidst the search for Nancy Guthrie, self-styled investigator Jonathan Lee Riches faces criticism for spreading misinformation.

The 84-year-old mother of “TODAY” show co-anchor Savannah Guthrie has been missing for three weeks. Authorities haven't ...

TUCSON, Arizona — Frustrated volunteers have taken the search for Nancy Guthrie into their own hands — combing the ...

The disappearance of Nancy Guthrie, 84, mother of Today co-anchor Savannah Guthrie, continues to grip national attention. The ...

Community members in southern Arizona are organizing their own searches for Nancy Guthrie, who has been missing for weeks.

Investigators returned to Nancy Guthrie's Tucson neighborhood as the search for the missing 84-year-old entered its 22nd day.

Pima County Sheriff Chris Nanos revealed in a new interview that the mixed DNA samples could take a while to sort through.

The search for Savannah Guthrie's missing mother is entering its fourth week, as authorities in Arizona maintain that the ...