DNA sample now complicates Nancy Guthrie case as family raises $1M reward

New reporting this morning raises new questions in the disappearance of Nancy Guthrie

CBS News reports DNA recovered from inside Guthrie's Tucson, Arizona home may not be strong enough to generate a usable profile

Sources close to the investigation describe the sample as low-level, meaning there may not be enough material to produce a clean match in federal or private DNA databases

The Pima County Sheriff's Department says its contracted lab is still yzing the evidence and has not reached a final conclusion

Investigators are also turning to genetic genealogy, the same technique used in high-profile cases like the Golden State Killer

searching public DNA databases for potential relatives of an unknown suspect. So far, no arrests, no name suspect

Just the video you see here captured on her doorbell camera. Now, as the case enters its fourth week, the Guthrie family is dramatically increasing the pressure

Savannah Guthrie host of the Today Show announced her family is offering a private reward of up to million for information that leads to the finding of her mother But we need to know where she is We need her to come home For that reason we are offering a family reward of up to million

for any information that leads us to her recovery. The FBI is separately offering a $100,000 reward

and urging anyone with firsthand knowledge to call the tip line. Sheriff Chris Nanos has cleared Nancy Guthrie's children and their spouses as possible suspects

And every hour and minute and second and every long night has been agony since then

of worrying about her and fearing for her and aching for her

and most of all, just missing her, just missing her. Investigators continue to process evidence, review surveillance and follow up on tips

This morning, the case remains open and the family says they will not stop searching

Nancy Guthrie has now been missing for the entire month of February