New Jersey Statutes Title 2C. The New Jersey Code of Criminal Justice 2C § 104-4

a. If there is clear and convincing evidence that the person named in the application will not be available as a witness unless immediately arrested, the judge may issue an arrest warrant. The arrest warrant shall require that the person be brought before the court immediately after arrest. If the arrest does not take place during regular court hours, the person shall be brought to the emergency-duty Superior Court judge.

b. The judge shall inform the person of:

c. The judge shall set conditions for release, or if there is clear and convincing evidence that the person will not be available as a witness unless confined, the judge may order the person confined until the material witness hearing which shall take place within 48 hours of the arrest.