Interestingly, Mamata Banerjee had left Congress to form Trinamool Congress in 1998 as a result of tussle with Mitra. Mitra had joined the party which had been formed by her once bete-noire Mamata Banerjee and the bonhomie continued till 2012.
Mitra's wife Sikha, a Trinamool Congress MLA, had first spoken up about differences with the party leadership and the gap went on widening, leading to her suspension from TMC for alleged anti-party activities.