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A glove containing DNA found about two miles from the house of \u201cToday\u201d show host Savannah Guthrie\u2019s<\/a> mother appears to match those worn by a masked person outside her front door in Tucson the night she vanished, the FBI said Sunday.<\/p>\n The glove, discovered in a field beside a road, was sent for DNA testing. The FBI said in a statement that it received preliminary results Saturday and was awaiting official confirmation. The development comes as law enforcement gathers more potential evidence as the search for Guthrie\u2019s mother heads into its third week. Authorities had previously said they had not identified a suspect.<\/p>\n On Sunday night, Savannah Guthrie posted an Instagram video in which she issued an appeal to whoever abducted her mother or anyone who knows where she is being kept. \u201cIt is never too late to do the right thing,\u201d Guthrie said. \u201cAnd we are here. And we believe in the essential goodness of every human being, that it\u2019s never too late.\u201d<\/p>\n Nancy Guthrie<\/a>, 84, was last seen at her Arizona home on Jan. 31 and was reported missing the following day. Authorities say her blood was found on the front porch. Purported ransom notes<\/a> were sent to news outlets, but two deadlines for paying have passed.<\/p>\n The discovery was revealed days after investigators had released surveillance videos<\/a> of the masked person outside Guthrie\u2019s front door. A porch camera recorded video<\/a> of a person with a backpack who was wearing a ski mask, long pants, jacket and gloves.<\/p>\n On Thursday, the FBI called the person a suspect. It described him as a man about 5 feet, 9 inches tall with a medium build. The agency said he was carrying a 25-liter \u201cOzark Trail Hiker Pack\u201d backpack.<\/p>\n Late Friday night, law enforcement agents sealed off a road<\/a> about two miles (3.2 kilometers) from Guthrie\u2019s home as part of their investigation. A series of sheriff\u2019s and FBI vehicles, including forensics vehicles, passed through the roadblock.<\/p>\n The investigators also tagged and towed a Range Rover SUV from a nearby restaurant parking lot late Friday. The sheriff\u2019s department later said the activity was part of the Guthrie investigation but no arrests were made.<\/p>\n On Tuesday, sheriff deputies detained a person for questioning during a traffic stop south of Tucson. Authorities didn\u2019t say what led them to stop the man but confirmed he was released<\/a>. The same day, deputies and FBI agents conducted a court-authorized search in Rio Rico, about an hour\u2019s drive south of the city.<\/p>\n Authorities have expressed concern about Nancy Guthrie\u2019s health because she needs vital daily medicine. She is said to have a pacemaker and have dealt with high blood pressure and heart issues, according to sheriff\u2019s dispatcher audio on broadcastify.com.<\/p>\n Earlier in the investigation, authorities had said they had collected DNA from Nancy Guthrie\u2019s property which doesn\u2019t belong to Guthrie or those in close contact with her. Investigators were working to identify who it belongs to.<\/p>\n The FBI also has said approximately 16 gloves were found in various spots near the house, most of which were searchers\u2019 gloves that had been discarded. <\/p>\n<\/div>\n