Nancy Guthrie, 84, was reported missing on Feb. 1. She was last seen by family members, who dropped her off outside her home in the Catalina Foothills neighborhood of Tucson the night before. Authorities declared the house and surrounding area a crime scene within days of her disappearance.

The 84-year-old mother of "Today" host Savannah Guthrie is believed to have been taken against her will from her Tucson, Ariz., home in the early morning hours of Feb. 1 Don Arnold/WireImage; FBI Phoenix/X Federal investigators are using new technology to ...

DNA evidence recovered at Nancy Guthrie's Arizona home is still undergoing testing at the FBI's crime lab as the search for the missing mom reaches day 100.

In this May 4, 2015, file photo, Australian-born presenter, Savannah Guthrie poses alongside her mother Nancy Guthrie during a production break while hosting NBC’s ‘Today Show’ live from Australia at Sydney Opera House in Sydney. (Don Arnold ...

The 84-year-old mom of 'Today's Savannah Guthrie has been missing since Feb 1.

DNA evidence recovered from Nancy Guthrie’s home is being rushed to the FBI’s elite lab for cutting-edge analysis following earlier testing at a private lab, Wonderwall.com can report. The move comes two and a half months after the 84-year-old was taken from her Arizona home in the dead of night.

The FBI recently received and is now analyzing potentially critical DNA recovered months ago from the Tucson, Arizona, home of Nancy Guthrie, sources familiar with the investigation told ABC News. Nancy Guthrie, the 84-year-old mother of "Today" show host Savannah Guthrie, was abducted from her home early on Feb. 1.

Today host Savannah Guthrie's missing mom, Nancy Guthrie, was 'alive' when taken from her home according to a retired FBI profier weighing in on the case