Authorities in Rio Rico, Arizona, which is around 60 miles south of Tucson, were seen searching a vehicle in connection with the disappearance of Nancy Guthrie, according to footage filmed by CNN on the scene.

The Pima County Sheriff’s confirmed that the vehicle, a gray SUV, was the one pulled over during a traffic stop, during which a person was stopped and taken in for questioning.

Video from the scene shows the car alongside vehicles from the Pima County Sheriff’s Department and Marana Police, a town north of Tucson.
Though the ransom notes in the Nancy Guthrie case have not been verified, investigators questioning the detained person will be looking for clues that could link them, a former FBI deputy director said.

“There is probably one or more analysts who have been ᴀssigned the task of monitoring this questioning – specifically for that,” Andrew McCabe told CNN’s Laura Coates early Wednesday.

“They’re looking for any clues to see that this person uses the same sort of words or the same sort of phrasing, or repeats the same sort of ideas in the course of of talking to investigators, ᴀssuming this person is talking to investigators,” he added.

Calm behavior of masked person in video suggests prior planning, former FBI profiler says
From CNN’s Helen Regan
Images and door cam footage from Nancy Guthrie’s home suggest the masked person was calm and had the ability to quickly adapt, an analyst said.

“He doesn’t seem to manifest really strong signs of being nervous… He’s not racing around nor does he appear jittery. That’s impressive to me,” former FBI senior profiler Mary Ellen O’Toole told CNN’s Laura Coates on Tuesday.

“You can only get that calmness from two things: your personality and your experience being in situations like this before,” she added.