The Union Government has approved a six-month extension of service for M. Sai Kumar, the Chief Secretary of Tamil Nadu. Under the approval, he will continue in the top administrative post of the State from 1 September 2026 to 28 February 2027. The Chief Secretary is the senior-most civil servant in a State and heads the State secretariat, coordinating the work of all government departments and advising the Chief Minister and the Council of Ministers on administrative matters.