N.J. Stat. Ann. § 54:4-80

A copy of the entry of the tax assessed against the delinquent, certified by the collector to be a copy truly taken from his duplicate, shall be a sufficient warrant for the distress and sale or arrest and imprisonment authorized by sections 54:4-78 and 54:4-79 of this title. The authority of a person to act as deputy shall be conferred by the collector in writing upon said copy of the tax entry and signed by the collector. The collector shall not be liable for deficiencies in collection happening without any neglect, fraud or default on his part. Failure to arrest and imprison any delinquent shall not be deemed neglect or default in the performance of his official duties.