An Arizona sheriff’s department got more than 4,000 calls within 24 hours after the release of videos of a masked person on Nancy Guthrie’s porch. Many tips will be worthless. Others could have merit. Experts say one thing’s certain: They can’t be ignored. Tips can solve crimes — big or small — and eerie images of a mysterious male covered head to toe have been the most significant clues shared with the public during Guthrie’s nearly two-week-old disappearance in the Tucson area. “It’s a tremendous amount of work,” said Roberto Villaseñor, a former Tucson police chief.

An Arizona sheriff’s department got more than 4,000 calls within 24 hours after the release of videos of a masked person on Nancy Guthrie’s porch. Many tips will be worthless.…

The disappearance in Arizona of the Today show host Savannah Guthrie’s mother has captivated the nation