<span style="color: #222222;">The Centre today issued a notification on extension of the tenure of Defence Secretary, Home Secretary, Director of Intelligence Bureau, Secretary of Research and Analysis Wing for the period of two years.<br />''<br />''The notification said, the Centre may give extension in service to these top officers, if the government considers it necessary. It said that the decision in this regard will be taken on a case to case basis, subject to the condition that the total term of such top officials, as the case may be, who are given such extension in service under this rule, does not exceed two years or the period provided in the Act or rules made thereunder, under which their appointments are made.<br />''At present, these officers have a fixed tenure of two years. </span><br />