"A year ago, I had raised an alarm about chitfunds and its role in duping poor people, but nobody cared to give me a hearing as I am a small party worker," Kartick told a tv channel.
"After the Trinamool Congress formed the government in the state, some people were out to derive benefit which is dangerous for the party," he said.
Asked who were involved in the scam, he evaded a direct answer saying "I think everybody knows."
The chief minister had told a party rally yesterday that she had learnt of the scam only on April 15 and that she would not spare anyone found guilty, including leaders in her own party.