Chatterjee, who was chairman of Rajarhat-Gopalpur Municipality in North 24 Parganas, accused CPI(M) of moving away from the basic ideology of communism.
He joined TMC in presence of the party secretary general Partha Chatterjee and TMC leader Abhishek Banerjee.
"I want to take part in the developmental process initiated by Mamata Banerjee. CPI(M) has moved away from the basic core ideologies of communism. I don't want to be part of that party," Chatterjee said.
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