Burdwan Superintendent of Police S M H Mirza said the two women--Rajira Bibi alias Rumi hailing from Karimpur in Nadia and Amina Bibi from Lalbagh in Murshidabad--were arrested from Khagragarh this morning. Later, another person identified as Hatij Mollah was detained by a CID team from his house at Khar Duttapa in Purbostholi, about 70 km from Burdwan.
Rajira Bibi is the widow of suspected militant Shakil Ahmed, who was killed in the explosion while Amina Bibi is the wife of Hasan Saheb, who was critically injured in the blast and is under treatment at Burdwan Medical College and Hospital. The second dead man was identified as Sovan Mandal.
The CID of West Bengal police is looking into possible involvement of terror outfits like LeT and HuJI in the blast.
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A large number of watch dials, SIM cards and other tools required to make improvised explosive devices were seized from the house immediately after the explosion, he said, raising suspicions that the victims of the explosion were associated with a militant outfit.
The suspected militants had rented the house a few months back and the police had also questioned the house owner Hasan Chowdhury, police sources said.
Citing the Burdwan blast, it charged the state government with destroying the evidence and not handing it over to the National Investigation Agency (NIA) for probe.
BJP Secretary Siddharth Nath Singh alleged that the Burdwan police instead of handing over to the NIA the materials recovered, took away the entire evidence and destroyed it.
"Why was the NIA informed almost a day late?" he asked at a news conference in Delhi.