N.J. Stat. § 40A:14-152.2
Whenever any municipal police officer or other law enforcement officer has been conferred with Statewide police powers and is acting under lawful authority beyond the territorial limits of his employing municipality or other appointing authority, said police officer or law enforcement officer, as the case may be, shall have all of the immunities from tort liability and shall have all of the pension, relief, disability, workmen's compensation, insurance, and other benefits enjoyed while performing duties within said employing municipality or the jurisdictional responsibility of the other appointing authority, as the case may be; provided, however, in the case of a law enforcement officer other than a municipal police officer or a county law enforcement officer afforded such immunities and benefits under the provisions of section 1 of P.L. 1977, c.439 (C.40A:14-107.1), the immunities from tort liability and other benefits enjoyed while performing duties within the jurisdictional responsibility of the appointing authority shall be extended only in those instances where (1) the law enforcement officer has been requested by the other jurisdiction to perform law enforcement duties within its boundaries; or (2) the law enforcement officer is performing law enforcement duties within another jurisdiction upon the orders of his superiors.
As used in this section, "law enforcement officer" means any person who is employed as a permanent full-time member of any State, county or municipal law enforcement agency, department, or division of those governments who is statutorily empowered to act for the detection, investigation, arrest, conviction, detention, or rehabilitation of persons violating the criminal laws of this State and statutorily required to successfully complete a training course approved by, or certified as being substantially equivalent to such an approved course, by the Police Training Commission pursuant to P.L. 1961, c.56 (C.52:17B-66 et seq.). "Law enforcement agency" means any public agency, other than the Department of Law and Public Safety, any police force, department or division within the State of New Jersey, or any county or municipality thereof, which is empowered by statute to act for the detection, investigation, arrest, conviction, detention, or rehabilitation of persons violating the criminal laws of this State.
N.J.S. § 40A:14-152.2