Any person or agency, other than an alleged perpetrator, participating in good faith in the making of a report of an alleged incident of adult abuse, neglect or exploitation, providing information relative to such incident or following a reporting protocol developed jointly with the department, or who in good faith investigates the report, administers the registry, or who participates in a judicial or administrative proceeding resulting from that report, shall have immunity from any liability, civil or criminal, that might otherwise be incurred or imposed. Any person or agency providing information in good faith, including materials requested by the department pursuant to N.H. Rev. Stat. § 161-F:56, shall have the same immunity with respect to participation in any investigation by the commissioner or his authorized representative or in any judicial proceeding resulting from such report.