Neb. Rev. Stat. § 23-1701.06: Neb. Rev. Stat. § 23-1701.06

The sheriff shall execute every summons, order, or other process and return the same as required by law. If the sheriff fails to do so, unless he or she makes it appear to the satisfaction of the court that he or she was prevented by inevitable accident from so doing, he or she shall be amerced by the court in a sum not exceeding one thousand dollars and shall be liable to the action of any person aggrieved by such failure.