The Trinamool Congress (TMC) has expelled eight senior leaders for alleged anti-party activities.
Expelled leaders include high-profile figures like Firhad Hakim, Arup Roy, and Aroop Biswas.
A rebel faction led by Ritabrata Banerjee is attempting to establish a new party leadership structure.
The dissidents have formed a 30-member National Working Committee while still calling for Mamata Banerjee to act as a mentor.