NEWYou can listen to Fox News articles now!TUCSON (Ariz.) — Blood spatter left on Nancy Guthrie’s front porch by a lone assailant in the Catalina Foothills of Tucson shows that she was still alive at the time. A retired FBI profiler believes that the masked abductor made enough mistakes to be identified. Jim Clemente spent 22 years working for the FBI. His analysis of blood on her porch shows that she was still alive. Expert raises alarming new theories amid lack of leads. NBC host Savannah Guthrie’s mother was taken from home. The FBI and Google were able to recover images from her Nest camera that showed the arrival of a masked person wearing gloves with a pistol on her front steps. This was the first clue for days. He was wearing a black Ozark Trail back pack, long sleeves gloves and a mask. A $10 WALMART GUN HOLTERS COULD HELP ID SUSPECT IN NANCY GUITHRIE CASE “In the process of that, I think he revealed what appeared to be a tattoo on the wrist, which he would not have revealed had he prepared adequately for that camera’s presence,” he said.SIGN-UP TO GET TRUE CRIME NEWSLETTER He was bumbling through this and made other mistakes. I believe that these mistakes will lead to his arrest. Expert: Savannah Guthrie reveals new details in the disappearance of her mother that don’t add up as questions haunt the case. “I believe that what it means is that he threatened her with his gun when he was at her bedside,” he told Fox News Digital. She did. “The doorbell footage does not show Guthrie leaving her home even though there was blood on her stone pathway. The camera was missing by the time deputies arrived at the scene. Clemente stated that the kidnapper was likely shocked that the FBI recovered the video, and that someone in his circle should have been able pick up on the signs. Anyone around him should have noticed the change in his behavior and possibly be able identify him as a result. “FBI HAS RECOVERED DNA DATA FROM NANCY GUTHRIE’S CASE: SOURCESThere were also unidentified hair samples recovered from the house. The sheriff’s office initially sent it to an independent lab in Florida. Like what you’re reading? Find out more on the TRUE CRIME HUB. “If it’s a hair, it will lead to identification,” Clemente explained. They will know his name. “There are rewards of over $1.2 million available for information that cracks this case.