(1) The chief fire officer of any city, town, or county fire department, or of any fire district or special service district organized for fire protection purposes, or his authorized representative shall investigate the cause, origin, and circumstances of each fire occurring in his jurisdiction when property has been destroyed or damaged.
(2) The fire officer shall:
(a) begin the investigation immediately after the occurrence of the fire; and
(b) attempt to determine, among other things, whether the fire was the result of carelessness or of design.
(3) If the fire officer making this investigation determines that the fire appears to be suspicious, or of unknown origin, the officer may notify the division to request assistance.