Md. Code, Alcoholic Beverages and Cannabis § 4–603

(a) Revocation or suspension procedures may be started:

(1) by a local licensing board, at the local licensing board’s initiative;

(2) on the complaint of a peace officer;

(3) if the license holder is located in a municipality that is within a county, on the complaint of the mayor and council of the municipality; or

(4) on the written complaint of at least 10 residents, real estate owners, or voters of the precinct in which the licensed premises are located.

(b) A license holder against whom proceedings under this section are brought shall:

(1) be entitled to a hearing on the charges in the complaint; and

(2) receive notice of the hearing at least 10 days before the hearing date.