Cal. FAM § 3134.5

(a) Upon request of the district attorney, the court may issue a protective custody warrant to secure the recovery of an unlawfully detained or concealed child. The request by the district attorney shall include a written declaration under penalty of perjury that a warrant for the child is necessary in order for the district attorney to perform the duties described in Sections 3130 and 3131. The protective custody warrant for the child shall contain an order that the arresting agency shall place the child in protective custody, or return the child as directed by the court. The protective custody warrant for the child may also contain an order to freeze the California assets of the party alleged to be in possession of the child. The protective custody warrant may be served in any county in the same manner as a warrant of arrest and may be served at any time of the day or night. For purposes of this subdivision, “assets” means funds held in a depository institution, as defined in subdivision (a) of Section 1420 of the Financial Code, in California.

(b) Upon a declaration of the district attorney that the child has been recovered or that the warrant is otherwise no longer required, the court may dismiss the warrant without further court proceedings.

(c) Upon noticed motion, any order to freeze assets pursuant to subdivision (a) may be terminated, modified, or vacated by the court upon a finding that the release of the assets will not jeopardize the safety or best interest of the child.

(d) If an asset freeze order is entered pursuant to subdivision (a), and the court subsequently dismisses the warrant pursuant to subdivision (b), notice of the dismissal shall be immediately served on the depository institutions holding any assets pursuant to the freeze order.