Kolkata, Nov 23 (ANI): TMC leader Derek O'Brien on Sunday hit back at Finance Minister Arun Jaitley for slamming West Bengal Chief Minister Mamata Banerjee over Burdwan blast. Jaitley had slammed Banerjee over her comment that the Burdwan blast was stage managed by the Centre and had said that police and intelligence agencies have nothing to prove that it was stage managed and alleged that the state CM chose to not take action against culprits. Derek O'Brien said that whole episode was a part of larger BJP master game plan as PM used this narrative throughout his rallies. He also alleged that the episode was designed at the RSS headquarters. Further, the TMC leader also questioned on source and amount of money spent Maharashtra and Haryana polls among others.