President Droupadi Murmu on Saturday conferred the Bharat Ratna on former Prime Ministers P.V. Narasimha Rao and Chaudhary Charan Singh; former Bihar Chief Minister Karpoori Thakur; and agronomist M.S. Swaminathan.
All the four awards were conferred posthumously at a brief ceremony at the Rashtrapati Bhavan.
Also read: All you need to know about the Bharat Ratna