If a child or custodial parent, guardian, or custodian fails to appear at the preliminary hearing as directed by a citation, the court may issue a summons to appear, an order to have the child brought to court, or a warrant as provided in section 5108 of this title. The summons, order, or warrant shall be served by the law enforcement agency that cited or took the child into custody, or another law enforcement agency acting on its behalf. (Added 2007, No. 185 (Adj. Sess.), § 2, eff. Jan. 1, 2009; amended 2015, No. 58, § E.204.3, eff. June 11, 2015.)