Elango, who was named interim CEO in August 2012 when the firm's face Rahul Dhir resigned, cited "personal reasons" for the decision to step down, Cairn said in a statement.
The move came as a surprise as Mr Elango, under whom Cairn touched 200,000 barrels per day of output from its showpiece Rajasthan oilfields, was widely tipped to become the full-time CEO of the company.
Last year, he was given a 40 per cent hike in salary, suggesting that he would be taking on a larger role within the company but promoter Anil Agarwal's group continued him as interim CEO.
Cairn said its board has accepted Mr Elango's resignation and Sudhir Mathur, chief financial officer, has taken over additional charge as interim CEO.
"Tom Albanese, CEO Vedanta Resources Plc, and Mike Yeager, Chairman, Operations Review Board, Cairn India, will continue to work closely with the leadership team in managing the business under the guidance of the Board," the statement said.
With Mr Elango, the entire top management of Cairn India has quit the company since billionaire Anil Agarwal-owned Vedanta in 2010 announced buying majority stake in the firm from Scottish explorer Cairn Energy Plc.
Rick Bott, who was executive director and chief operating officer of Cairn India, quit the firm on June 15, 2011, while its executive director and chief financial officer Indrajit Banerjee resigned with effect from August 23, 2011.
David Ginger, Cairn India's director of exploration and new ventures, quit the firm shortly after that and Mr Dhir put in his paper after the Cairn-Vedanta deal was completed.
Ajay Gupta quit the firm in January 2013 as the company's director - commercial and new business.
In February this year, Sundeep Bhandari, the man credited with laying the foundation and then building what is now Cairn India, quit the company. He along with Mr Dhir, Mr Bott, Mr Banerjee and Mr Ginger ran the firm before Vedanta took over.
Vedanta completed the $8.67-billion acquisition of Cairn India in December 2011.
Mr Mathur came in from Aircel after Mr Dhir quit.
RESULT
Cairn India's interim CEO P Elango has quit the company, Rick Bott, who was Executive Director and Chief Operating Officer of Cairn India,
Cairn India Chief Executive Elango Quits - NDTVProfit.com
Cairn India's interim chief executive P Elango has quit the company, completing the exit of all of the tier-1 management of the firm since it was acquired
Cairn India CEO P Elango quits - Hindustan Times
NRI billionaire Anil Agarwal-controlled Cairn India on Friday suddenly announced the exit of its interim chief executive officer P Elango. Elango, was
Cairn India CEO P Elango quits in surprise move ...
Cairn India's interim CEO P Elango has quit the company, Rick Bott, who was Executive Director and Chief Operating Officer of Cairn India,
Cairn Indias interim CEO P. Elango quits - Livemint
Cairn Indias interim chief executive officer (CEO) P. Elango resigned from his position on Friday morning citing personal reasons
Cairn India CEO P Elango quits in surprise move; all tier ...
Cairn India said Elango's who was Executive Director and Chief Operating Officer of Cairn India, quit while its Executive Director and Chief Financial
Cairn India CEO Elango quits | Business Line
Cairn India CEO Elango quits than two-year tenure as the chief of the company, Elango has decided to step down on of Cairn Indias Executive
Cairn India interim CEO P Elango quits - Business Today ...
Cairn India's interim CEO P Elango has quit the company, Rick Bott, who was Executive Director and Chief Operating Officer of Cairn India,
Cairn India's interim CEO P Elango quits - The Economic Times
NEW DELHI: Cairn India's interim CEO P Elango has resigned and handed over charge to Chief Financial Officer Sudhir Mathur, the company said in a statement.
Elango calls it quits at Cairn India | Business Line
the company is seeing its CEO quitting. On Friday P Elango, tenure as the chief of the company, Elango has decided to of Cairn Indias Executive
