Md. Code, Courts and Judicial Proceedings § 6–309

(a) Designated employees of the Department of Public Safety and Correctional Services may serve a criminal summons, warrant, or charging document.

(b) The authority of an individual designated to serve criminal process under this section shall be limited to the service of process within institutions operated by the Department of Public Safety and Correctional Services.

(c) The Secretary of Public Safety and Correctional Services shall ensure that an employee designated to serve criminal process has received adequate training.

(d) This section may not be construed to limit the authority of any employee of the Department of Public Safety and Correctional Services to serve civil process as provided in the Maryland Rules.