The development came as a shocker for the people of the state which has been mostly safe from terror attacks as several investigations revealed that Bengal and Kolkata were being used as transit route by terrorists.
The October 2 blast took place in Khagragarh area of Burdwan district when the entire state was soaked in festive spirits of Durga Puja in which two suspected terrorists were killed.
The Centre decided to hand over the case to National Investigation Agency (NIA) irrespective of ruling Trinamool Congress opposing it by terming that such a probe was an "interference to federal structure".
BJP accused Banerjee of not doing enough to stop infiltration from Bangladesh in order to pursue vote bank politics. TMC was quick to hit back by stating that the onus of stopping infiltration lies with central border guarding agencies.
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TMC also accused BJP of trying to flare up its "communal agenda" in the state by using the blast.
Apart from the political slug fest, the incident also pointed out the lacunae in the state police force to deal with terror issues.
However, the arrest of Burdwan blast mastermind Sajid, a Bangladeshi national and stated to be 'chief commander' of JMB, was a saving grace for the state police.