N.J. Stat. § 44:7-31
Any person who has knowledge that old age assistance is being improperly granted or administered under this chapter may file a complaint in writing with the State division setting forth the particulars of such violation. Upon receipt of such complaint, the director of old age assistance, or his representative, shall make an investigation of the allegations set forth in such complaint, or, if at any time the State division has reason to believe that assistance to aged needy persons has been improperly granted, the director, or his representative, shall cause an investigation to be made. The director of old age assistance may suspend payment of any installment pending an investigation. He shall notify the county welfare board of any proposed investigation. If it appears, as a result of any such investigation, that old age assistance was improperly granted, such assistance shall be canceled by the State division which shall immediately notify the county welfare board that it will not approve any payment made after such suspension, but if it appears, as a result of such investigation that assistance was obtained properly, the suspended payments of assistance may be payable as the State division may find is required by the circumstances.
N.J.S. § 44:7-31