BREAKING: BRISTOL, Va. - There is a heavy police presence at the Walmart near Interstate 81's Exit 7.
Police and a police K-9 are searching in the area of a tractor trailer parked in the Walmart parking lot on the east side of the property, near the garden center.
City police, Virginia State Police and the Washington County Sheriff's Office are on the scene and the entrance on Clear Creek Road is blocked. About 15 police units are on the scene.
We will have additional information when it becomes available.