Investigation into the Nancy Guthrie kidnapping is ongoing in The Woodlands, Texas. Authorities have identified a suspect's backpack, which is a significant development in the case. As part of their efforts, investigators are working with Walmart.

The details of this collaboration are not specified, but it suggests that the retailer may have information relevant to the investigation. For more information on the Nancy Guthrie kidnapping case and the progress of the investigation, readers can refer to the source, KHOU Houston, for further details and updates.