N.J. Stat. § 30:4C-53
Within five calendar days after the placement of a child outside his home pursuant to a voluntary agreement, the division or the designated agency, as the case may be, shall file notice of such placement with the Family Part of the Chancery Division of the Superior Court in the child's county of supervision. Such notice shall be in the form of a petition encaptioned "In the matter of................., a minor" and shall include the date and type of placement and the reasons for such placement, which shall include the specific efforts to prevent the placement or the specific situation which the division has documented to establish an exception to the requirement to make reasonable efforts to prevent placement in accordance with section 24 of P.L. 1999, c. 53(C.30:4C-11.2). Such filing shall establish a continuing jurisdiction of the court over the placement of the child.
The division shall also file immediate notice with the court of any change in placement and of the permanent placement or return home of the child. The court's jurisdiction shall cease upon receipt of such notification of the return home or alternative permanent placement of the child, except as permitted pursuant to subsection e. of section 8 of P.L. 1984, c.85 (C.30:4C-61.1).
N.J.S. § 30:4C-53