"We are questioning Mr Sorcar in connection with the chit fund case. We have to find out whether he was involved in any way or not," the ED officer told PTI.
Chatterjee was arrested on Friday and was produced before the competent court in Asansol which sent him to two days CBI custody
The government's corporate fraud investigation wing is currently probing 185 suspected illicit deposit schemes that raised thousands of crores from gullible investors. Of these, 135 schemes were run of West Bengal.
The agency has been looking into the role played by the regulators in handling this chit fund scam.
Trinamool Congress MP Kunal Ghosh on Friday offered to resign from Rajya Sabha if charges against him in the West Bengal chit fund scam were proved.
The chit fund scam in West Bengal is getting bigger with market regulator Sebi turning the heat on over a dozen other companies running similar Ponzi schemes. People are rushing to withdraw Rs 20,000 crore invested in these companies.