If, in any investigation, it shall appear to the fire marshal or deputy fire marshal, from the evidence presented or obtained, that any building or other property in the county has been wilfully set on fire by any person or persons, the fire marshal or deputy fire marshal shall transfer the evidence presented or obtained during the course of the investigation to the county police evidence room technician, along with a recommendation to the superintendent of county police for criminal prosecution of the person or persons responsible for setting the fire.
16 P.S. § 6105