Mamata Banerjee-led party also made a scathing attack on Prime Minister Narendra Modi for not trusting the state administration in probing the incident which has suspected terror links.
A blast in a house in Burdwan on October 2 killed two alleged bomb-makers.
Citing the blast incident and alleged recovery of IEDs and Jihadi literature from the house of a TMC worker, BJP had yesterday accused the Mamata Banerjee government of turning the state into a safe haven for anti-national and Jihadi activities.
BJP also charged the state government with destroying the evidence and not handing it over to the National Investigation Agency (NIA) for a probe.
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Targeting the PM, O'Brien said "trust is a word not in the PM's dictionary. The PM does not trust his own party colleagues -L K Advani, Sushma Swaraj, Rajnath Singh. Nor does he trust key members of his own administration. He thinks Chief Ministers of all states also operate like him..."
He said "we are confident that the state administration will get to the bottom of this and find the truth."
Sharpening his attack on BJP, TMC leader said "in the past they (BJP) have insitigated communal riots to divide and rule India. This will never be accepted by the people.