Latest FBI neighborhood canvass in Guthrie case could mean feds have 'digital evidence:' former agent

TUCSON, Ariz. — The FBI on Wednesday took to the streets and neighborhoods surrounding Nancy Guthrie's home to canvas for clues in her disappearance.

The federal law enforcement agency announced the search online, and asked the public to use caution.

"This morning, numerous FBI agents are conducting an extensive search along multiple roadways in the Catalina Foothills area related to the Nancy Guthrie investigation," the agency said. "We are asking the media and motorists to follow...