Doorbell video and broken floodlights point to multiple suspects in Nancy Guthrie abduction case. Experts analyze evidence in mysterious disappearance.

The request comes amid reports that the sheriff’s office had fielded over tens of thousands of calls in the first half of February.

Authorities trying to solve the disappearance of Nancy Guthrie say they might tap DNA genealogy databases, the same step that police took to unravel a decades-old series of murders in California and the fatal stabbings of four college students in Idaho.

Denver7 spoke with Scripps News Group Tucson reporter Craig Smith, who has worked at KGUN for decades. He says social media has led to non-stop media coverage and widespread conspiracy theories.

Savannah Guthrie is focused on the search for her missing mother, Nancy Guthrie, in Arizona three weeks after she went missing

The FBI and sheriff's department have been investigating the disappearance of Nancy Guthrie, the mother of "Today" show co-host Savannah Guthrie, for nearly two weeks.

The search for 84-year-old Nancy Guthrie began after she was abducted from her home near Tucson, Arizona, early on Sunday, Feb. 1, authorities said.

From chilling surveillance footage and alleged ransom notes to DNA and a collection of gloves, here’s a look at what we know about the evidence in the Nancy Guthrie investigation.

Authorities intensify the search for missing 84-year-old Nancy Guthrie as new forensic evidence and possible international leads emerge, nearly three weeks after her suspected abduction from her Tucson home.