In a related development, CBI arrested one Daljeet Singh, posted as Upper Division Clerk with the Department of Industrial Policy and Promotion under Commerce Ministry as the agency has found documents pertaining to foreign investments in HDFC Bank Limited and a pharma company Glenmark Pharmaceuticals also having been leaked.
Both HDFC Bank and Glenmark Pharmaceuticals have denied the allegations.
A senior CBI official said that it was a well-flourishing racket that was being operated out of the national capital with deals being fixed mostly in country's financial capital Mumbai and Bengaluru.
The Government has given a go ahead to the agency in plugging all leakages from the government offices and nab all culprits.
The RIL official based in Mumbai was allegedly in regular touch with Khemchand Gandhi, who was providing him with confidential documents from Commerce Ministry and Finance Ministry on the foreign investment policies, CBI sources said.
RIL did not respond to queries seeking their comments on the development.
The sources said the agency has also summoned Rajendra Chitale, partner of Chitale and Associates.
His partner Paresh was arrested by CBI red handed on Friday while allegedly trying to destroy troves of confidential government documents stashed in his office.
52-year old Chitale, a Chartered Accountant, has been on the board of several big finance companies in private sector as well as big PSUs and Government bodies.

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