Oaths and Subpoenas. The officer presiding at the hearing or such persons as he may designate shall have power to administer oaths and issue subpoenas to compel the attendance of witnesses and the production of relevant evidence, and the provisions of the County and Municipal Investigation Law, P.L. 1953, c. 39 (N.J.S.A. 2A:67A-1 et seq.), shall apply.