Gabby Petito: Hiker '100 percent sure' he saw Brian Laundrie on Appalachian Trail

A Florida hiker who was near the Tennessee-North Carolina border over the weekend says he is "100 percent sure" he saw Gabby Petito's fiance Brian Laundrie, and reported the sighting to police. Meanwhile, investigators also continue to search the Carlton Reserve for any sign of Laundrie.