FBI parsing through 10,000 hours of video in Nancy Guthrie search

The FBI is investigating thousands of hours of video footage as part of its investigation into Nancy Guthrie’s disappearance.

Authorities have not detained a suspect in the case since Guthrie was reported missing from her Arizona home roughly four weeks ago. The FBI said Thursday it has collected up to 10,000 hours of video related to the agency’s investigation. Sifting through the footage has proven to be a lengthy process, as each video must be watched in real time, according to NBC News.