TUCSON, Ariz. — Investigators believe the missing mother of ''Today'' show host Savannah Guthrie is ''still out there,'' but they have not identified any suspects, a sheriff in Arizona said Thursday.
Pima County Sheriff Chris Nanos also said DNA tests showed blood found on Nancy Guthrie 's porch came back a match to her. Authorities think she was taken from her home in Tucson against her will over the weekend.
''Right now, we believe Nancy is still out there. We want her home,'' Nanos said at a news conference five days after she was reported missing. The sheriff, however, acknowledged that authorities have no proof she is still alive.
A day earlier, Savannah Guthrie and her siblings released a message to her mother's kidnapper, saying they are ready to talk but want proof their mom is still alive. However, there has been no public sign of a response.
In the heart-wrenching video posted on social media, Savannah Guthrie acknowledged hearing media reports about a ransom letter sent to multiple news outlets.
Investigators are taking the ransom note seriously, said Heith Janke, the FBI chief in Phoenix, who noted it included a demand for money with a deadline along with details about a flood light at the home and an Apple watch.
''To anyone who may be involved, do the right thing. This is an 84-year-old grandma,'' Janke said.
Authorities say that any decision on ransom demands ultimately is up to the family.