Every insurer licensed to do business in this Commonwealth, and its employees, agents, brokers, motor vehicle physical damage appraisers and public adjusters, or public adjuster solicitors, who has a reasonable basis to believe insurance fraud has occurred shall be required to report the incidence of suspected insurance fraud to Federal, State or local criminal law enforcement authorities. Licensed insurance agents and physical damage appraisers may elect to report suspected fraud through the affected insurer with which they have a contractual relationship. All reports of insurance fraud to law enforcement authorities shall be made in writing. Where insurance fraud involves agents, brokers, motor vehicle physical damage appraisers, public adjusters or public adjuster solicitors, a copy of the report shall also be sent to the department.