The Pima County Sheriff's Department refused to comment on a report that polygraph tests were being conducted.

Polygraph tests are being conducted at the Pima County Sheriff's Office, as per reports, amid an ongoing search for Nancy ...

A total of 14 suspects underwent polygraph tests at a forensic laboratory in Mumbai over the last few days and five of them.

Charlotte, NC-based Kimbrough Consulting provides professional, confidential lie detector and polygraph services ...

According to FOX News, authorities with the Pima County Sheriff's Department are conducting polygraph testing on Wednesday. It is unclear if the testing is tied to the investigation into Nancy Guthrie ...

Law enforcement have yet to name a suspect in connection to Nancy Guthrie's disappearance, but they are looking for a man ...

Feb. 18 marks the 18th day since Nancy Guthrie, the 84-year-old mother of NBC "Today" show host Savannah Guthrie, disappeared ...

Nancy Guthrie, 84, disappeared in the early hours of February 1. Authorities believe she was kidnapped and are desperately trying to locate her.

New evidence is in the lab as a mother and son were subjects of search warrants but later released in the Nancy Guthrie case.

The number of DNA profiles being studied and other details were not being released because of the active investigation, a ...

Nancy Guthrie, 84, has been missing for 18 days after she was taken from her Catalina Foothills home, and in the meantime, ...

The Department of Homeland Security has begun administering polygraph tests to employees in an effort to identify those leaking information about immigration operations to the media, according to four ...