(4) Upon receipt of the complaint, the sheriff shall verify that the person submitting the complaint is the record owner of the real property or the authorized agent of the owner and appears otherwise entitled to relief pursuant to the provisions of this section. If verified, the sheriff shall, without delay, serve a notice to immediately vacate on all the unlawful occupants and shall put the owner in possession of the real property. Service may be accomplished by hand delivery of the notice to an occupant or by posting the notice on the front door or entrance of the dwelling. The sheriff shall also attempt to verify the identities of all persons occupying the dwelling and note the identities on the return of service. If appropriate, the sheriff may arrest any person found in the dwelling for trespass, outstanding warrants, or any other legal cause.