In a fresh setback to the Mamata Banerjee-led faction of the Trinamool Congress (TMC), former minister and the group’s state president Chandrima Bhattacharya resigned from all party posts except primary membership on Saturday.

In her resignation letter addressed to Mamata Banerjee, Bhattacharya stated, “I hereby tender my resignation from the post of State President of All India Trinamool Congress, which had been conferred on me in the meeting at Kalighat on 03.06.2026. I also hereby resign from all other posts which I hold at present. Please note that I withdraw myself as the authorised signatory of All India Trinamool Congress and all other related organizations in respect of the accounts maintained in various banks. I also withdraw myself from being your authorised person before the Election Commission of India.”

Bhattacharya’s resignation comes soon after her son, Sourav Basu, joined the TMC group led by Ritabrata Banerjee.

In the erstwhile TMC-led Cabinet, Bhattacharya served as the minister of state in two key departments – finance and health – held by Mamata Banerjee herself.

Bhattacharya is considered a close confidante of Mamata Banerjee and, sources said, the former chief minister had chosen her for the post of state party president after the split despite objections from certain leaders.

The Mamata Banerjee-led faction has not yet officially reacted to Bhattacharya’s resignation. But the leader of the other TMC faction, Ritabrata Banerjee, remarked, “It is proven that no one is ready to remain in the private limited company.”