The Division or Department, acting on its own initiative or in response to a written complaint or allegation from an interested party, shall investigate any written complaint or allegation of a violation of this chapter by a public agency. If the Division or Department determines that there is a substantial probability that a violation is occurring, it may issue an advisement letter to a public agency. The advisement letter shall explain in sufficient detail the facts of the alleged violation.
N.J. Admin. Code § 17:27-10.4