The sheriff of any county or city or jail superintendent of any regional jail may receive into his jail any person committed thereto under the authority of the United States, and keep him safely according to the warrant or precept of commitment, until he shall be discharged under the laws of the United States. But no person arrested on civil process shall, under this section, be committed to any jail other than that of the county or city within which such person resides or is found.
The county or city or regional jail authority or, if none, the body responsible for the fiscal management of the regional jail shall be paid by the United States for the support of any such prisoner.
Va. Code § 53.1-79