"The CBI is conducting a probe into the multi-crore Saradha chit fund scam as per the Supreme Court's order and the recent protest demonstrations by TMC led by the state law minister Chandrima Bhattacharya against the CBI is tantamount to contempt of court.
"I am planning to move the apex court over the issue next week. I am consulting my lawyer in this regard," Mannan, who participated in a mass convention of the state Congress over the issue, said.
Hundreds of women TMC workers led by Bhattacharya had staged a sit-in outside the CBI office here on September 11 and 12, protesting against alleged "politicised nature of investigation" into the Saradha scam by the CBI.
CPI(M) leader Sujan Chakraborty had mocked the demonstration outside the CBI office and said the TMC should have demonstrated outside the state secretariat instead.
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Trinamool Congress has dismissed allegations by opposition parties that many of its leaders were involved in Saradha Ponzi scam and claimed it was a ploy to keep the main culprits behind the curtains.
"It was Mamata Banerjee who got the main accused arrested and her government has been trying to return money to the investors," Chatterjee had said.