15 GCA § 1815: Service of Notice of Petition for Letters of Administration Upon Heirs; Manner of Service; Service by Mail.

At least ten (10) calendar days before the hearing on a petition for letters of administration, a copy of the notice of such hearing shall be served upon each heir of the decedent named in the petition, as follows:

(a) Personally, such personal service to be effected by the

Office of the Marshal of the Superior Court of Guam; or

(b) By registered mail, sent by the petitioner, postage prepaid, addressed to such heir's mailing address as set forth in the petition; or if any heir's mailing address is not known to the petitioner, addressed to general delivery at the post office serving such heir's municipality (if such heir resides in Guam) or to general delivery at the post office serving such heir's last known place of residence (if such heir resides outside Guam).

As used in this Section, “post office” includes subpost office, substation, or other like facility regularly maintained by the United States Postal Service, or under the authority of any foreign government.