Kolkata/IBNS, June 3 -- Trinamool Congress (TMC) leader and Mamata Banerjee's close aide Firhad Hakim is all set to step down as Kolkata Mayor, adding to the challenges facing the party as it grapples with an intensifying internal crisis following its defeat in the West Bengal Assembly elections.

Hakim's decision to resign comes at a time when the Trinamool Congress is witnessing increasing organisational unrest, defections and open rebellion from a significant section of its legislators.

The departure of Firhad Hakim from the post of Kolkata Municipal Corporation's (KMC) Mayor marks another significant development in the rapidly evolving political situation within the Trinamool Congress.

In recent weeks, several KMC councillors have r...