Investigators in Arizona have confirmed that FBI Quantico specialists are analysing key bloodstain evidence from outside missing pensioner Nancy Guthrie's Tucson home, as the Pima County Sheriff's Department faces fresh calls to the property more than 100 days after she vanished.
Nancy Guthrie, 84, was reported missing on 1 February. Authorities say she was taken against her will from her home in the Catalina Foothills area during the night. Since then, detectives have collected thousands of tips, released doorbell camera footage of a masked figure near her door and gathered blood spatter from the porch and pathway that they believe may be central to understanding what happened. No suspect has been identified and Guthrie's whereabouts remain unknown.