TMC MP Satabdi Roy was quizzed by the CBI on Monday in connection with the Saradha ponzi scheme case.
Roy, a Bengali actor and MP from Birbhum, was questioned at the CBI office in Kolkata, sources said.
She was a brand ambassador of the Saradha Group and it was suspected that she had taken money from the ponzi scheme company to promote it, they added.
The agency had registered the case on June 4, 2014, in accordance with a Supreme Court order dated May 9, 2014, against then CMD of Saradha Group, Sudipta Sen, and others under penal provisions pertaining to criminal conspiracy, cheating and other offences.
It was alleged that the accused persons had collected huge sums from investors under various schemes by fraudulently promising high returns.