(e) The court shall direct the order to the sheriff of the county in which the premises are located and the sheriff shall execute the order immediately by making a demand for possession on the landlord, if found, or the landlord's agent or other person in charge of the premises. If the landlord fails to comply with the demand, the officer shall take whatever assistance may be necessary and immediately place the residential tenant in possession of the premises. If the landlord, the landlord's agent, or other person in control of the premises cannot be found and if there is no person in charge, the officer shall immediately enter into and place the residential tenant in possession of the premises. The officer shall also serve the order and verified petition or affidavit immediately upon the landlord or agent, in the same manner as a summons is required to be served in a civil action in district court.