She asserted that their protest against note ban would continue.
"I just can't think that Sudip Bandopadhyay, who is our party's leader in the Lok Sabha will be arrested. I also have information that Modi wants to arrest many other TMC leaders like Abhishek Banerjee, Sovan Chatterjee (city mayor) and Firhad Hakim (minister)," she told reporters immediately after Sudip's arrest by the CBI in connection with the alleged Rose Valley chit fund scam.
"We will fight legal battle in every case," she said.
Earlier, at a meeting in Medinipur she charged Modi with using CBI, ED and IT against persons who protested against demonetisation.
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The TMC supremo also convened an emergency meeting on Sudip's arrest to chalk out the party's action plan.
TMC would launch dharnas to protest against Sudip's arrest from tomorrow, she said, adding "politics cannot be done by resorting to vendetta".
"The party is behind Sudip. He has not done anything wrong. Even if he is in jail, the people of Bengal will keep him in their heart," she said.
The TMC chief also said that it was the duty of the Centre, the Sebi and the RBI to keep a check on ponzi schemes in which they have "failed completely".
Mamata said, "He (Modi) has got a government... Even I
also have a government in my hand. I can also arrest people here who are involved in riots. But I have not done so because I believe in political courtesy."
"If someone has done any wrong, he will get caught. If someone tries to cover his or her own wrongdoing by baseless allegations..... We never interfered in investigative affairs," Goyal, who is in the city, said.