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VIDEO February 8

Sheriff leading Guthrie investigation SPOTTED at basketball game

Pima County Sheriff Chris Nanos was spotted at a college basketball game amid the week-long search for 84-year-old Nancy Guthrie.

VIDEO February 8

No person of interest named in Nancy Guthrie investigation

Ó£ÌÒÊÓƵ correspondent Alicia Acuna reports the latest on the search for Nancy Guthrie. Ó£ÌÒÊÓƵ contributor Paul Mauro also joins 'Ó£ÌÒÊÓƵ Sunday' to weigh in on the investigation and the family's third video plea.

VIDEO February 8

Guthrie family releases cryptic third plea video as investigation continues

U.S. Attorney for Washington, D.C. Jeanine Pirro joins 'Fox & Friends Weekend' to weigh in on the disappearance of Nancy Guthrie, the arrest of a Benghazi terror suspect and more.

VIDEO February 8

Guthrie family releases cryptic third plea video for abducted mother Nancy Guthrie

Guthrie family's third plea video for their missing mother Nancy Guthrie shows a shift in strategy, agreeing to pay ransom. Former homicide detective Pat Diaz analyzes the messages, suggesting the abductors are professional.

VIDEO February 8

Ex-FBI official says Nancy Guthrie ransom communications appear technologically sophisticated

Former FBI investigator Bill Daly discusses the latest in the search for NBC host Savannah Guthrie's mother, Nancy, on 'Fox & Friends Weekend.'

VIDEO February 8

Retired FBI official reveals 'priority number one' in Nancy Guthrie investigation

Retired FBI official Scott Duffey joins 'Fox & Friends Weekend' to discuss the ongoing investigation into the disappearance of Nancy Guthrie, potential mistakes made by law enforcement and more.

VIDEO February 8

Former hostage negotiator deciphers Guthrie family's latest video plea for mother's return

Greg Yovane, a former NYPD hostage negotiator, analyzes the Guthrie family's public messages, including the recent video asking for their mother's return. He discusses the significance of their language and the critical need for proof of life.

VIDEO February 8

Officer seen leaving Annie Guthrie's home with white case and brown bag

A Pima County Sheriff's Department officer was seen leaving Annie Guthrie's home Saturday night carrying a white case, which he brought in with him, and a brown bag.

VIDEO February 8

Light flashes, silhouette of a police officer seen in windows of Annie Guthrie's home

Ó£ÌÒÊÓƵ Digital captured video of photography lights flashing inside a window at Annie Guthrie's home as the silhouette of a police officer could be seen in a different window at the house.

VIDEO February 7

WATCH: Ó£ÌÒÊÓƵ Digital captures camera flashes inside Annie Guthrie's home

Investigators returned to Annie Guthrie's home in Tucson, Ariz., on Saturday. Ó£ÌÒÊÓƵ Digital captured video of what appears to be camera flashes inside the home. (DWS for Ó£ÌÒÊÓƵ Digital)

VIDEO February 7

Law enforcement returns to Annie Guthrie's home

Ó£ÌÒÊÓƵ Digital captured what appears to be unmarked police vehicles at Annie Guthrie's home in Tucson, Ariz., on Saturday. White flashes were visible, which appears to be investigators taking pictures. (Ó£ÌÒÊÓƵ Digital)