NEW DELHI, Jan. 12 -- The Central Bureau of Investigation (CBI) on Friday filed a supplementary charge sheet in the Rs 24.60 billion Saradha ponzi scheme case where it named Nalini Chidambaram, the wife of senior Congress leader and former Union minister P Chidambaram.

An officer of the investigative agency, speaking on conditions of anonymity, said that it was alleged in the 150-page document that a total of Rs 14.3 million was transferred to the account of Nalini Chidambaram in phases.

This is the sixth supplementary charge sheet in the case.

The first charge sheet was filed in October 2014. In September 2014, Nalini Chidambaram, a Chennai-based lawyer, was questioned by the Central Bureau of Investigation after Saradha chairman Sudipt...