1 detained for questioning in Nancy Guthrie's abduction: 'Significant development'

A person has been detained for questioning in connection with the abduction of the mother of “Today” show co-host Savannah Guthrie, according to a law enforcement official briefed on the investigation.

The Pima County Sheriff’s Department, with assistance from the FBI, detained the person south of Tucson, the source told ABC News. The individual is being held for questioning as investigators continue to pursue multiple leads in the case.

Law enforcement officials are preparing to search...