RIO RICO, Ariz. (PulseWire) — A person was detained for questioning Tuesday in the case concerning Nancy Guthrie, who was reported missing from her Arizona home. This development follows the release of surveillance footage showing a masked individual outside her home around the time of her disappearance.

The Pima County Sheriff’s Department confirmed the detention occurred during a traffic stop south of Tucson, but no further details have been provided about the individual. In addition, the FBI has referred additional inquiries to the sheriff's office.

A delivery driver transiently detained on suspicions of kidnapping claims innocence and was released after several hours, although no confirmations have been made by law enforcement regarding his release.

Authorities are conducting searches in Rio Rico, located about an hour from Tucson, as the investigation escalates. Nancy, age 84, has been missing since February 1, prompting widespread concern for her wellbeing. She is described as mentally sound but requires medications, raising fears for her health in the absence of such care.

The surveillance footage released shows a person wearing a ski mask and carrying a backpack, apparently tampering with a doorbell camera, further raising alarms about what might have happened to Nancy.

Savannah Guthrie, alongside her siblings, has shared heartfelt video messages, urgently pleading for their mother's safe return and suggesting they were open to paying a ransom. The case has captivated national attention as officials continue to investigate all leads.

As updates emerge, the community of Rio Rico remains actively engaged, with local law enforcement canvassing neighborhoods for additional information that might help locate Nancy Guthrie.