Three freight line shipping containers were robbed of Winchester ammunition in in early September, according to the Bureau of Alcohol, Tobacco, Firearms and Explosives.
The bureau said it is searching for two vehicles in connection with the thefts at the freight stations in Morrisville, Kernersville and Wilmington.
One of the vehicles is reportedly a gray or silver four-door car and the other is a blue, light gray or silver SUV, according to ATF.