N.J. Stat. Ann. § 2C:52-26

If, within 5 years of the entry of an expungement order, any party to whom notice is required to be given pursuant to section 2C:52-10 notifies the court which issued the order that at the time of the petition or hearing there were criminal, disorderly persons or petty disorderly persons charges pending against the person to whom the court granted such order, which charges were not revealed to the court at the time of hearing of the original motion or that there was some other statutory disqualification, said court shall vacate the expungement order in question and reconsider the original motion in conjunction with the previously undisclosed information.