TUCSON, Ariz. — The disappearance of ''Today'' show host Savannah Guthrie's mother three weeks ago has inspired a small number of volunteers to launch their own searches in the dense desert near her home in hopes of cracking the case.
The Pima County Sheriff's Department said while it appreciates the concern for Nancy Guthrie, it asked people inquiring about volunteering to give investigators space to do their jobs.
''We all want to find Nancy, but this work is best left to professionals,'' the agency said in a statement over the weekend.
Nancy Guthrie's disappearance
Nancy Guthrie, 84, was last seen at her home just outside Tucson on Jan. 31 and was reported missing the following day. Authorities believe she was kidnapped, abducted or otherwise taken against her will. Drops of her blood were found on the front porch, but authorities haven't publicly revealed much evidence.
Despite the sheriff's request for people not to search on their own, volunteers have continued to look. A small group reported finding a black backpack on Sunday, but it wasn't the same brand as one identified in video surveillance that the FBI released of a masked person at Guthrie's home the night she disappeared.
A sheriff's spokesperson told Tucson television station KOLD that the bag and its contents didn't appear to be viable leads. The Associated Press reached out to the sheriff's department for comment on Monday.
Volunteers begin to search