The Enforcement Directorate (ED) on Wednesday questioned Khyati Sadana, an aide of former Union Minister Matang Sinh, in connection with the multi-crore Saradha chitfund scam.
The ED had earlier issued notice to Sadana and another aide of Sinh, Rupendranath Singh, and summoned them to appear before it.
Sinh, who is the first former union minister to be arrested in the case, was recently sent to CBI custody till February 11 by court.
He was reportedly charged with criminal conspiracy, cheating and misappropriation of funds related to Saradha Realty, one of the companies of the group which is being probed by the agency, CBI sources said.
The ED also froze his property worth Rs. 90 crore.