Blood found inside home of Savannah Guthrie’s mother, Nancy Guthrie, source says

 A little bit of blood was found inside the Arizona home of “Today” show co-host Savannah Guthrie’s mother, Nancy Guthrie, whose disappearance is being treated as a crime, a law enforcement source familiar with the case told CBS News.

It is unclear whose blood it is, but it is being tested. Investigators and analysts are combing through the house in search of clues to the 84-year-old’s disappearance.

Investigators believe that Nancy Guthrie was abducted from her Tucson, Arizona, home in the middle of the night over the weekend, Pima County Sheriff Chris Nanos told CBS News.

The sheriff dismissed the possibility that Guthrie, who lives alone, may have wandered away from her home because he said she doesn’t have any cognitive issues and her mobility is limited.

Authorities have been searching for Guthrie since Sunday. She was last seen at her home Saturday night, but no one knew she was missing until she didn’t show up for church the next morning, Nanos said.

This is a breaking news story. Check back for updates.