The Pima County Sheriff’s Office didn’t immediately launch a high-tech aircraft at the start of the search for Savannah Guthrie’s missing mother, possibly hurting the investigation, according to a report.

The Pima County Sheriff’s Office is slated to hold a news conference Thursday at 1 p.m. regarding Savannah Guthrie’s missing 84-year-old mother, Nancy Guthrie.

A Domino’s delivery driver accidentally attempted to drop off a pizza to the front door of Nancy Guthrie’s house on Tuesday morning. During a live taping of NewsNation, The Hill’s broadcast

The Arizona sheriff spearheading the investigation into the disappearance of “Today” show anchor Savannah Guthrie’s 84-year-old mother was spotted sitting near courtside at a University of Arizona basketball game Saturday night — just as the nation remained riveted to the desperate search for Nancy Guthrie.

Pima County Sheriff Chris Nanos has been in the national spotlight during news conferences on the disappearance of Nancy Guthrie. He has been sheriff of Pima County for six of his 50 years in law enforcement. He oversees a 1,500-person department that covers more than 9,000 square miles of unincorporated Pima County.

Fox News contributor Ted Williams and Fox News chief correspondent Jonathan Hunt report live from the scene in Tucson, Ariz., as Ret. NYPD Lt. Cmdr. Joe Cardinale helps analyze the situation at Nancy Guthrie's home.

Sheriff Chris Nanos leads Nancy Guthrie investigation with 50 years law enforcement experience. The Pima County sheriff's career spans violent crimes to drugs.

Authorities are "inspecting" the message for its authenticity.

The Pima County Sheriff’s Office said Friday it is investigating the legitimacy of a new message related to the disappearance of Nancy Guthrie, the mother of “Today” show co-host Savannah Guthrie.

The Pima County Sheriff's Department is helping to investigate the “use-of-force” in a shooting involving Border Patrol agents and a man wanted in a human smuggling