FBI agent visited Arizona gun store with photos and names to check purchases during Nancy Guthrie missing person ...

A Tucson, Ariz., area gun store owner said an FBI agent stopped by his store with a three-page list of names and photographs ...

For a few decades starting in the 1940s, the FBI recruited high school girls for clerical work. A Chicago Catholic school was a go-to spot.

The store owner said he was given a list of 18 to 24 names and asked to check if any of those people bought a firearm from him in the last year.

The Pima County Sheriff's Department previously said they were canvassing gun shops and showing the doorbell video released by the FBI to see if anyone recognized the armed suspect ...

FBI agents are visiting local businesses with surveillance video and suspect photos as investigators cast a wide net for information.