N.J. Stat. Ann. § 53:1-17

The supervisor of the state bureau of identification shall co-operate with, afford instruction and offer assistance to sheriffs, chiefs of police and other law enforcement officers in the establishment and operation of their local systems of criminal identification and in obtaining fingerprints and other means of identification of all persons arrested on a complaint of an indictable offense, to assure co-ordination with the system of identification conducted by the state bureau. The superintendent of state police shall arrange for such co-operation, instruction and assistance by the supervisor.