A person has been detained for questioning in disappearance of Nancy Guthrie, sheriff's office says

TUCSON, Ariz. — A person has been detained for questioning in the disappearance of Nancy Guthrie, officials said Tuesday, offering another potential break in a case that has gripped the nation for more than a week.

Deputies detained the person during a traffic stop south of Tucson on Tuesday, according to the Pima County Sheriff's Department.

The department did not immediately provide additional details. It wasn't clear if the person being questioned is the person captured on surveillance video outside Guthrie's house that was released earlier Tuesday.

The FBI referred all questions about a person being detained to the sheriff's department.

The department, along with the FBI's Evidence Response Team, was also conducting a court-authorized search in Rio Rico, about an hour south of Tucson, Tuesday night as part of the investigation, the department said in a statement. It was expected to take several hours.

The news came hours after the FBI released surveillance images of a masked person with a handgun holster outside the front door the night Nancy Guthrie vanished.

The person wearing a backpack and a ski mask can be seen in one of the videos tilting their head down and away from a doorbell camera while nearing an archway at the home of of the mother of ''Today'' show host Savannah Guthrie.

The videos — less than a combined minute in length — gave investigators and the public their first glimpse of who was outside Nancy Guthrie's home just outside Tucson, but the images did not show what happened to her or help determine whether the 84-year-old is still alive.

FBI Director Kash Patel said the ''armed individual'' appeared to "have tampered with the camera." It was not entirely clear whether there was a gun in the holster.

The videos were pulled from data on "back-end systems'' after investigators spent days trying to find lost, corrupted or inaccessible images, Patel said.

''This will get the phone ringing for lots of potential leads,'' said former FBI agent Katherine Schweit. ''Even when you have a person who appears to be completely covered, they're really not. You can see their girth, the shape of their face, potentially their eyes or mouth.''

By Tuesday afternoon, authorities were back near Nancy Guthrie's neighborhood, using vehicles to block her driveway. A few miles away, law enforcement was going door-to-door in the area where daughter Annie Guthrie lives, talking with neighbors as well as walking through a drainage area and examining the inside of a culvert with a flashlight.

She has high blood pressure and issues with mobility and her heart, and she needs daily medication, officials have said.

Authorities initially could not pull images from camera

Until now, authorities have released few details, leaving it unclear if ransom notes demanding money with deadlines already passed were authentic, and whether the Guthrie family has had any contact with whoever took Nancy Guthrie.

Savannah Guthrie posted the new surveillance images on social media Tuesday, saying the family believes Nancy Guthrie is still alive and offering phone numbers for the FBI and county sheriff. Within minutes, the post had thousands of comments.

Investigators had hoped cameras would turn up evidence right away about how Nancy Guthrie disappeared from her home in an secluded neighborhood.

Savannah Guthrie expressed desperation a day ago

Heartbreaking messages by Savannah Guthrie and her family shifted from hopeful to bleak as they made pleas for whoever took Nancy Guthrie. In a video just ahead of a purported ransom deadline Monday, Savannah Guthrie appeared alone and spoke directly to the public.

''We are at an hour of desperation,'' she said. ''We need your help.''

Much of the nation is closely following the case involving the longtime anchor of NBC's morning show.

White House press secretary Karoline Leavitt said President Donald Trump watched the new surveillance footage and was in ''pure disgust,'' encouraging anyone with information to call the FBI.

Connor Hagan, a spokesperson for the FBI, said Monday that the agency was not aware of ongoing communication between Guthrie's family and any suspected kidnappers. Authorities also had not identified any suspects, he said.

Videos from Guthrie siblings appealed directly to whoever took their mom

Three days after the search began, Savannah Guthrie and her two siblings sent their first public appeal to whoever took their mother, saying, ''We want to hear from you, and we are ready to listen.''

In the recorded video, Guthrie said her family was aware of media reports about a ransom letter, but they first wanted proof their mother was alive. "Please reach out to us,'' they said.

The next day, Savannah Guthrie's brother again made a plea, saying, ''Whoever is out there holding our mother, we want to hear from you. We haven't heard anything directly."

''We received your message, and we understand. We beg you now to return our mother to us so that we can celebrate with her,'' said Savannah Guthrie, flanked by her siblings. ''This is the only way we will have peace. This is very valuable to us, and we will pay.''

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Seewer reported from Toledo, Ohio. Associated Press reporters Darlene Superville in Washington, Ed White in Detroit and Hallie Golden in Seattle contributed to this report.