Md. Code, Business Occupations and Professions § 10–404

(a) In an investigation under this subtitle, the Attorney General, a deputy attorney general, or any assistant attorney general whom the Attorney General designates may:

(1) issue a subpoena for the attendance of a witness to testify or the production of evidence;

(2) administer oaths; and

(3) examine witnesses.

(b) The laws that relate to civil actions govern the attendance and compensation of witnesses in an investigation under this subtitle.

(c) If a person fails to comply with a subpoena or refuses to testify about a material matter, on petition of the Attorney General, a circuit court may compel compliance with the subpoena.