A source tells CNN the masked person seen on the doorbell camera footage of Nancy Guthrie's Arizona home the morning she is believed to have been kidnapped was at her doorstep on another night. The Pima County Sheriff's Department said in a statement "there is no date or time stamp associated with these images" and "any suggestion that the photographs were taken on different days is purely speculative." CNN's Ed Lavandera reports. Read more: https://cnn.it/4s6q39d | CNN International