Administrative Procedure Act Article 74

Where service cannot be executed in the manner prescribed by the two preceding articles, it may be effected by leaving the document for service with the local self-governing authority or police authority of the place where the service is intended to be executed, and preparing a notice of service in duplicate, one of which shall be posted on the door at the domicile, residence, business office, business establishment or workplace of the person to be served upon and the other shall be either delivered to one of his neighbors for forwarding to the person to be served upon or placed in the mailbox or at a suitable location of the place where service is intended to be executed.In the circumstance referred to in the preceding paragraph, if the service is carried out through the post office, the document for service may be left with the post office at the place where service is intended to be executed. The office with which a document is left shall keep the document in custody for three months from the date of receipt thereof.