Police have released a man hours after they detained him in connection to the disappearance of Nancy Guthrie, the mother of US news anchor Savannah Guthrie, CBS News, the BBC's US partner, has reported.

After taking the man into custody at a traffic stop, police searched his home in Rio Rico, south of Tucson, Arizona, sources familiar with the investigation told CBS News.

After his release, the man, identified only as Carlos, told reporters outside his home that he did not know who Nancy Guthrie was. "I don't follow the news," he said.

Guthrie, 84, was abducted from her home near Tucson more than a week ago, sparking a widespread search and desperate appeals from her family.

"I hope they get the suspect, because I'm not it," Carlos said, according to a video posted on X by CBS reporter Andres Gutierrez.