Former Home Secretary Rajiv Mehrishi took charge as the Comptroller and Auditor General (CAG) on 25 September, succeeding Shashi Kant Sharma.
Mehrishi, 62, was administered the oath of office and secrecy by President Ram Nath Kovind at the Rashtrapati Bhavan.
Mehrishi, a 1978 batch (retired) Indian Administrative Service officer of the Rajasthan cadre, completed his two-year fixed term as the Home Secretary last month.
Sharma, who had taken over as the CAG on 23 May 2013, demitted office on 22 September. Sharma was Defence Secretary prior to his appointment as the CAG.
Mehrishi will have a tenure of around three years.
The CAG is appointed for a term of six years or till the incumbent attains the age of 65, whichever is earlier.
As a constitutional functionary, the CAG is primarily entrusted with the responsibility to audit the accounts of the Union government and of the state governments.
CAG reports are laid before Parliament and legislatures of the states.
Mehrishi, who hails from Rajasthan, holds a Master of Business Administration degree from the University of Strathclyde, Glasgow (UK). He also possess Master of Arts (MA) and Bachelor of Arts (BA) degrees from Delhi University.
Mehrishi has held several posts in both his state cadre and in the Centre.
Before being appointed as the Home Secretary, he worked as Economic Affairs Secretary and Chief Secretary of Rajasthan.
Mehrishi has also worked as Secretary in the Department of Chemicals and Fertilisers and the Department of Overseas Indian Affairs.
(With inputs from PTI)
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