Md. Code, Alcoholic Beverages and Cannabis § 21-2603
§21–2603.
(a) The Board may subpoena records pertaining to a licensed establishment.
(b) (1) The Board may petition the circuit court if a witness refuses to produce a subpoenaed record.
(2) The court may proceed by attachment against the witness as if the refusal had been by a witness summoned to appear in a case pending before the court.