Md. Code, Criminal Law § 9–602

(a) (1) Except as provided in paragraph (2) of this subsection, a State official or employee may not directly or indirectly monitor or record in any manner a telephone conversation made to or from a State unit.

(2) If prior approval is granted by the Attorney General, a State official or employee may monitor or record a telephone conversation:

(i) on telephone lines used exclusively for incoming police, fire, and rescue calls; or

(ii) with recorder-connector equipment that automatically produces a distinctive recorder tone repeated at approximately 15-second intervals.

(b) A person who violates this section is guilty of a misdemeanor and on conviction is subject to a fine not exceeding $1,000.

(c) Conviction of a violation of this section is also grounds for immediate dismissal from State employment.