Ala. Code § 45-58-231.36: Hearings.

The board or its specially authorized representatives shall have the power to administer oaths, take depositions, certify official acts, and issue subpoenas to compel the attendance of witnesses and production of papers necessary as evidence in connection with any hearing, investigation, or proceeding within the purview of this subpart. The sheriff, or some other person so designated by him or her, shall serve all processes of the board, and shall attend upon and preserve order at all public hearings conducted by the board. In case a person refuses to obey the subpoena, the board or its authorized representative may invoke the aid of any circuit court in order that the testimony or evidence be produced. Upon proper showing, the court, in its discretion, may issue a subpoena or order requiring the person to appear before the board or its representative and produce all evidence and give all testimony relating to the matter in issue. A person who fails to obey the subpoena order may be punished by the court for contempt. The fees of witnesses for attendance and travel shall be the same as fees for witnesses in the circuit courts of this state, which fees shall be paid from the treasury of the city or county.