Section 120. When office of Magistrate or police officer falls vacant, any officer holding charge competent to exercise power.

Whenever in consequence of the office of a Magistrate or police officer becoming vacant, any officer holds charge of the post of such Magistrate, or police officer or succeeds, either temporarily or permanently, to his office, such officer shall be competent to exercise all the powers and perform all the duties respectively conferred and imposed by this Act on such Magistrate or police officer, as the case may be.