Former TMC MP Kunal Ghosh was also at the CBI office on Sunday.
Meghalaya: Former Trinamool Congress (TMC) MP Kunal Ghosh outside CBI office in Shillong, says, 'I have been asked by the CBI to attend this office, so I’m here. I have cooperated with the investigating agency.' He is to be questioned by CBI today. pic.twitter.com/LmwIeyAXZo
The CBI is relying on a 91-page letter from Ghosh, who was expelled by TMC, to the Enforcement Directorate, detailing the role of Kumar in handling the ponzi scam probe after the main accused, Sudipta Sen and Debjani Mukherjee, both promoters of Saradha Group of companies, had fled to Kashmir, officials said in Kolkata.
Sen and Mukherjee were arrested in 2013 from Kashmir.
Ghosh had implicated BJP leader Mukul Roy, who was once the right-hand man of Banerjee and 12 others in the Saradha scam.
The Supreme Court had directed Kumar on Tuesday to appear before the CBI and "faithfully" cooperate in the investigation of cases arising out of the Saradha chit fund scam.
The apex court had also directed Kumar to appear before the investigating agency at a neutral place in Shillong "to avoid all unnecessary controversy" and made clear that he would not be arrested.
The CBI had moved the Supreme Court after its officials were thwarted by Kolkata Police when they had gone to Kumar's official residence in Kolkata to question him on February 3.
Chief Minister Mamata Banerjee had rushed to the spot and had staged a three-day "Save the Constitution" dharna against the CBI move.
The central investigating agency had said that its officials had wanted to question Kumar to plug the holes in the Saradha investigation case as he was supposed to be in possession of certain key documents as a member of the special investigation team.
(With inputs from PTI)
WION had reported yesterday that Kumar had insisted on his questioning on Saturday being videotaped.