(1) In case of doubt or dispute about the owner of the bond, if the principal and interest of the bond are not paid even after one hundred and eighty days have passed after the principal payment date, the bank shall conduct the necessary investigation by one of its officers and if necessary (2) According to sub-section (1), the bank shall publish a notice in a national level daily newspaper and send a written notice to the registered person's address if the bank has to investigate for the purpose of nominating the person. In this way, it shall be considered that all the beneficiaries have received the notice after one hundred and eighty days have passed from the date of publication or notification in the national level daily newspaper, whichever is the latest. Should be published.