Nancy Guthrie still missing, man detained for questioning says "I'm innocent"

Nancy Guthrie, 84, the mother of "Today" show co-host Savannah Guthrie, has been missing since Feb. 1. Authorities believe she was abducted from her home in Tucson in the middle of the night. A man who says he was detained in the investigation Tuesday night has been released. He told reporters early Wednesday, "I didn't do anything. ... I'm innocent."