Pima County Sheriff Chris Nanos has explained that there are some problems with the DNA evidence collected from Nancy Guthrie’s house.

Authorities are warning volunteer search groups to stay off Nancy Guthrie's property and give investigators space after ...

Sheriff: DNA Match in Guthrie Case Could Take Up to a Year ...

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Sunday marks the third week since 84-year-old Nancy Guthrie, the mother of NBC "Today" show host Savannah Guthrie, ...

Investigators returned to Nancy Guthrie's Tucson neighborhood as the search for the missing 84-year-old entered its 22nd day.

Nancy Guthrie, the mother of 'Today Show' co-anchor Savannah Guthrie, has been missing for 20 days now, but there have been no concrete updates about her whereabouts until now.

A major setback has occurred when it comes to the DNA that was recovered from the scene in the ongoing Nancy Guthrie investigation.

Volunteers recover a backpack as the search for missing 84-year-old Nancy Guthrie reaches day 22. Investigators continue DNA testing.

Investigators are hopeful that some of the DNA that was found at Guthrie's home can be parsed and help point to a suspect in ...