Md. Code, Public Safety § 13A-202

(a) A person authorized by this title or by 10 U.S.C. 47, or by regulations issued under either, to apprehend persons subject to this title, a marshal of a court–martial appointed pursuant to the provisions of this title, and a peace officer or civil officer having authority to apprehend offenders under the laws of the United States or of a state, may do so on probable cause that an offense has been committed and that the person apprehended committed it.

(b) Commissioned officers, warrant officers, and noncommissioned officers have authority to quell quarrels, frays, and disorders among persons subject to this title and to apprehend persons subject to this title who take part therein.

(c) If an offender is apprehended outside the State, the offender’s return to the area must be in accordance with normal extradition procedures or by reciprocal agreement.

(d) No person authorized by this section to apprehend persons subject to this title or the place where such offender is confined, restrained, held, or otherwise housed may require payment of a fee or charge for so receiving, apprehending, confining, restraining, holding, or otherwise housing a person except as otherwise provided by law.

(e) A civil officer having authority to apprehend offenders under the laws of the United States or the State, or a military officer or noncommissioned officer subject to this title who has been authorized by the Governor by regulation or with the authority of the Adjutant General may summarily apprehend a person subject to this title and deliver the person into the custody of the State military forces.