Gruesome evidence discovered just outside home of Savannah Guthrie's mom by TV network

Gruesome new details emerged Tuesday after the cable news network NewsNation reported finding a blood trail leading from the front door of the home of Nancy Guthrie, the 84-year-old mother of "Today" show co-host Savannah Guthrie.

Nancy Guthrie was reported missing from Pima County, Arizona, at the end of January. Local authorities have described her as a “vulnerable adult” and have opened a criminal investigation into her disappearance.

As of Tuesday, she had not yet been found, and police were treating the case as potentially involving foul play. Authorities have also acknowledged they're aware of reports of possible "ransom" demands.

The Pima County sheriff's office has been reluctant to reveal too many details on why it feels Nancy Guthrie was "abducted," but the NewsNation report comes after TMZ reported receiving a ransom note containing Bitcoin demands and details about what Guthrie was wearing at the time, as well as items inside her home.

Shortly after that, NewsNation reported finding harrowing evidence at the home.

"NewsNation discovered a blood trail leading from the front door of Nancy Guthrie’s home Tuesday, the first visible evidence in the disappearance of the 84-year-old mother of 'Today' show co-host Savannah Guthrie," the report said. "The blood was visible outside the front entrance of the rural Tucson home after authorities cleared the crime scene and released the property to the family."

Previously, reports said investigators found blood inside the home as well. It wasn't immediately clear whose blood was inside the house. Officials said there were signs that someone had forced entry inside the home.

The report noted that a Ring doorbell camera that was installed near the entrance had since disappeared. Investigators were looking into whether the kidnappers removed it.