"CBI shall expedite the investigation and filing of charge sheets where it has not been done," the bench comprising Justices T S Thakur and C Nagappan said.
Solicitor General Ranjit Kumar, appearing for CBI, said that in 17 cases against the group, the local police had already filed the charge sheets and now the probe agency is looking into 21 other matters.
It was alleged by the investors that there as many as 44 FIRs pending against the group and CBI was not doing the needful.
Pravat Kumar Dash, the director of the Seashore Group of companies, is in jail in connection with the chit-fund scam.
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The apex court had, on May 9 last year, ordered a CBI probe into the chit fund scam cases in West Bengal, Odisha and Assam allegedly involving various companies including Saradha, while taking note of allegations that scamsters were getting "patronage" of people in "high positions".
CBI had said there was paucity of 754 officers and it was getting difficult for it to carry out the instructions of the court.