Va. Code Ann. § 52-20

Members of the State Police force of the Commonwealth, provided such officers are in uniform, or displaying a badge of office, may, at the scene of any motor vehicle accident, or in the apprehension of any person charged with the theft of any motor vehicle, on any of the highways of the Commonwealth, upon reasonable grounds to believe, based upon personal investigation, including information obtained from eyewitnesses, that a crime has been committed by any person then and there present, apprehend such person without a warrant of arrest; and such officers may arrest, without a warrant, persons duly charged with crime in another jurisdiction upon receipt of a telegram, a radio or teletype message, in which telegram, radio or teletype message shall be given the name or a reasonably accurate description of such person wanted, the crime alleged and an allegation that such person is likely to flee the jurisdiction of the Commonwealth.