Article continues below advertisementThe desperate search for Nancy Guthrie continues as Pima County Sheriff Chris Nanos revealed police have a "strong believe about the abductor's motive.While speaking to NBC News on Thursday, March 12, Nanos shared new details about the investigation into the 84-year-old's disappearance, warning the public that Guthrie is the victim of a "targeted" kidnapping and that the suspect will "absolutely" strike again.