Trinamool Congress leader Krishna Chakraborty on Thursday resigned as mayor of the Bidhannagar Municipal Corporation, a day after Kolkata Mayor Firhad Hakim submitted his resignation, The Hindu reported.

Chakraborty cited “personal reasons” in her resignation letter to the municipal commissioner.

A long-time associate of Trinamool Congress chief Mamata Banerjee, Chakraborty said she would continue to serve as a councillor.

She, however, claimed that it had become difficult for the civic board to function since the change of government in West Bengal, The Telegraph reported.

Her resignation came amid a period of upheaval within the Trinamool Congress after the Bharatiya Janata Party’s victory in the West Bengal Assembly elections ended the party’s 15-year rule in the state.

The party is facing internal divisions with expelled MLA Ritabrata Banerjee claiming that a group of 58 of the TMC’s 80 legislators had been recognised as the party’s legislature wing in the Assembly. The stand taken by the 58 MLAs is being viewed as a challenge to Banerjee, who is supporting Sovandeb Chattopadhyay as the Opposition leader in the Assembly.

Separately, on Wednesday, the TMC dissolved all its committees and organisational units in the state, saying it would undertake a “comprehensive” review of its performance and organisational structure.

Edited by Tanya Shrivastava.