Kolkata/New Delhi, June 24 -- The Trinamool Congress led by Mamata Banerjee and a rebel bloc led by West Bengal leader of the opposition Ritabrata Banerjee filed competing national working committee lists with the Election Commission of India (ECI) on Tuesday, claiming legal control of the party, initiating a formal dispute over the party's name, assets, and election symbol. On Monday afternoon, the rebel faction, claiming the support of 65 of the party's 80 legislators, held a session at a hotel in New Town, Kolkata. The legislators voted via voice vote to remove party founder Mamata Banerjee from the post of party chairperson, electing Howrah Central legislator Arup Roy to the position. Roy served as a minister in the Trinamool Congress g...