The mother-in-law of the man detained in connection with Nancy Guthrie's disappearance spoke out as police raided her home.

The Arizona woman, who identified herself as Josefina, told NewsNation she believes her son-in-law is innocent.

Josefina told the outlet that her son-in-law was inside their Rio Rico home when Nancy was taken. 

The person of interest was detained by police during a traffic stop just miles from the Mexican border. 

He was released a short time later and told reporters he had been working as a food delivery driver when cops detained him. 

'My daughter and he, and the kids, my grandkids, were doing DoorDash when they got stopped here,' the mother-in-law told NewsNation. 

She also told CNN that authorities are searching her home after they received a tip relating to the ongoing investigation. 

'I told them you can go in and search my house, there is nobody there. I have nothing to hide,' Josefina said.

She insisted that her son-in-law had 'nothing to do' with the 84-year-old's disappearance, as authorities continue to investigate the detained man.

Josefina added that police did not present a search warrant before entering her home.

'I’m sorry what’s happened to [the Guthries],' she said. 

'I don’t know her, I don’t know anything about their lives or what’s going on, but I’m so sorry - whoever took her, I hope she got back safe.'

Authorities also showed Josefina the surveillance footage of the suspect from Nancy Guthrie's ring camera, but she said there was no resemblance to her son-in-law.

Video showed an armed figure clad in a ski mask and carrying a backpack, wearing black latex gloves.

The suspect can also be seen tampering with the mother-of-three's Nest doorbell camera and ripping the camera from its holder on the door frame. 

'They showed me a video to see if it was him, to see … if I recognize the things he was wearing, he doesn’t have any of that. He doesn’t have anything that comes in the video,' she told ABC15’s Lillian Donahue.

Josefina said her son-in-law was a 'good guy,' and has no prior criminal record, assuring that she was 'positive' he was at home when Guthrie was snatched.

'On the weekends, he stays at my house. He doesn’t go nowhere,' she told the outlet.

It is unclear whether police believe the detained person is the armed figure in the video.

Authorities were seen searching a gray SUV in connection with the disappearance of Nancy Guthrie, footage from the scene in Rio Rico shows.

The Pima County Sheriff's Department confirmed to CNN that the vehicle was the same one pulled over during a traffic stop during which a man was taken into custody for questioning.

Footage from the scene shows the vehicle surrounded by Pima County Sheriff's Department vehicles and Marana Police cars.

A witness who spoke exclusively to the Daily Mail described the traffic stop where the person of interest was detained.

'There were five or six unmarked cars and they had a silver SUV pulled over, a police car facing it. Two guys were out of a car, and their hats said "FBI,"' Krystal Bacica recounted.

'The only police car that was marked said Marana Police,' she continued, noting that 'they pulled the car right in front of my apartment building in Frontage Road, Rio Rico.'