The Enforcement Directorate (ED) has registered a money laundering case against the West Bengal-based Saradha Chit Fund.
The case was registered at the ED's Guwahati office, after allegations of financial irregularities against the company.
Assam Police has also registered an FIR against Saradha Group after investors complained that they were duped of their hard earned money.
The filing of the case comes hours after the Calcutta High Court directed the company not to make any financial transactions till further orders.
Hearing a PIL for seeking a CBI investigation into the scam, the high court also directed the West Bengal Government to file an affidavit by May 2 on the steps it has taken against the Saradha Group.
The Corporate Affairs Ministry has also decided to set up a Special Task Force under its Serious Fraud Investigation Office to probe complaints of irregularities by chit fund companies.
The decision was taken at a meeting held yesterday by the Corporate Affairs Minister Sachin Pilot with senior officials.
The Saradha Chit Fund scam has robbed thousands of investors of their savings in West Bengal and Assam.
A Kolkata sub-divisional magistrate's court had on Thursday remanded Saradha GFroup Chief Sudipta Sen and two others to 14 day police custody.
The Congress and the CPI-M have demanded a CBI enquiry into the scam.
The Assam Government is also in favour of a CBI probe in the matter.
The Government of Bihar has also ordered a compilation of a data bank about non-banking financial companies. (ANI)