Mr. Ghosh had demanded a CBI enquiry into the role of some of the party members in the Saradha scam.
The All India Trinamool Congress on Saturday announced its decision to suspend its member Kunal Ghosh for anti-party activities, party general secretary Partha Chatterjee said.
Mr. Ghosh who has been leading a tirade against the party in respect of the Saradha scam, is a Rajya Sabha member. He was show-caused earlier this month.
Mr. Chatterjee said that Mr. Ghosh has been making statements daily aimed at maligning the party and the decision was taken unanimously by a three member disciplinary panel, pending enquiry.
Mr. Ghosh has pointed an accusatory finger at the party, demanding a CBI enquiry to unravel the role of some of the party members in the scam.