(a) To the absentee at the last-known address of the absentee by registered mail or by certified mail with return receipt.
(b) By ordinary mail to the devisees and heirs named in the petition.
(2) The court may order that additional notice of the hearing be given by publication or by other means. Proof of mailing or other notice shall be made by the petitioner and filed in the proceeding. [1969 c.591 §204; 1973 c.506 §39; 1991 c.249 §15; 2007 c.284 §14]