The constable of the justice of the peace court or his deputy shall act as prosecutor when called upon to do so by the justice of the peace when the justice of the peace exercises his jurisdiction to adjudicate removal, disposition, or abandonment violations prohibited by R.S. 34:843. In those cases where the constable has issued the citation or summons or has made the arrest or appears as a witness against the accused, the constable shall designate the deputy constable to prosecute the matter. If there is no deputy constable, then the justice of the peace may appoint a special deputy constable to prosecute the case or may authorize a constable from another ward in the parish to prosecute the matter.
La. R.S. § 13:2587.2