"The team of bomb disposal and detection squad visited the spot today and collected some samples," a senior CID official told PTI.
A Trinamool Congress office in West Bengal's Burdwan district was yesterday destroyed in a huge blast suspected to have been caused by explosives stored inside the structure. The blast took place at the Pichkudi Dhaal TMC office in Ausgram in the evening.
Meanwhile, West Bengal state BJP president Dilip Ghosh demanded an NIA investigation into the case.
The state BJP is also sending a party delegation to visit the area tomorrow.
"During Khagragarh blast in Burdwan also we had said that jehadis were making bombs and it was proven later in an NIA investigation," Ghosh said.
On October 2, 2014, a blast had occurred in a house at Khagragarh in Burdwan town which claimed two lives. The NIA had later found that the two were Jamiat-ul-Mujahideen operatives from Bangladesh.
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