All six Congress ministers in West Bengal on Saturday resigned from the Mamata Banerjee government, a day after her Trinamool Congress pulled out of the centre's ruling United Progressive Alliance.

All the Congress ministers - two cabinet-rank and four ministers of state - went in a body to Banerjee's chamber at the state secretariat, Writers' Buildings, and handed over their resignations to the chief minister a little after 5 pm.

 The Congress was the junior partner in the Trinamool-led regime since it took charge 16 months ago in May 2011 after ending the 34-year rule of the Left Front.