Md. Code, State Government § 20–1042

(a) If the Attorney General has reasonable cause to believe that a person is engaged in discrimination prohibited by the U.S. Constitution, the Maryland Constitution, or State or federal law, the Attorney General may commence a civil action in accordance with this part.

(b) The civil action shall be instituted in the circuit court for the county where:

(1) the alleged violator resides or has a principal place of business; or

(2) the alleged violation occurred.