At around 11 p.m. on August 3, a rear passenger of a car grabbed the cash register through the drive-thru window, according to the Loudoun County Sheriff's Office.
Police said the silver Chevrolet sedan fled the scene with the register.
The suspect was described as a black man in his late 20's or early 30's, wearing a gray hooded sweatshirt, red vest, and a blue disposable mask, police reported.
Anyone with information about the suspect or the incident should call police at 703-777-1021.
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