Person released as search for 'armed individual' continues in Nancy Guthrie case

Well, now to this breaking news in the search for Nancy Guthrie this morning overnight, the Pine County Sheriff's Department detained someone for questioning just south of Tucson and then released them. The search was also conducted at a location associated with that person. This happened hours after the FBI released images and videos of a masked man figure walking up to Guthrie's door the night that she went missing. ABC's Nicole D'Antonio has the latest. This morning, the person who says he was detained for questioning in connection with the abduction of Nancy Guthrie has now been released. Investigators focusing on the small town of Rio Rico just south of Tucson, Arizona. Descending upon this home where a court-authorized search was completed overnight, but still no apparent sign of Nancy Guthrie. A woman claiming to be the homeowner spoke with our ABC affiliate, KNXV, saying someone called in a tip reporting Guthrie was there. I don't know who she is. I don't know anything about her. They only said that they gave a tip that she was in my house. And I told them you can go in and search for help. There's nobody there. I have nothing to hide. She told reporters her son-in-law was the person detained by police, identifying the vehicle in a picture and saying he's a delivery driver in Tucson, but insisting he had nothing to do with Nancy Guthrie's disappearance. Detaining people while you're doing a search is not uncommon. It comes hours after the FBI released new images of a masked man approaching Nancy Guthrie's home the night she was abducted. The video showing the suspect appearing in the entranceway, slowly walking towards the front door, his face covered by a ski mask, wearing gloves and carrying a backpack. Authorities say he was armed with a gun on his waistband. There was a lot to look at in that video. You know, you were able to see the eyes to a degree. You were able to see how tall, approximately how tall he was, you know, approximately what his build was like. All those indications will help somebody identify that person. Savannah Guthrie quickly sharing those images on social media, writing, quote, someone out there recognizes this person. We believe she is still out there. Bring her home. And sources told ABC News the Guthrie family was shown these images before they were made public and did not recognize the man. Nicole D'Antonio, ABC News, Washington.