NIA Director General Sharad Kumar on Friday took stock of the progress in the investigation in the Burdwan blast case.
Kumar arrived here this morning and left for Burdwan where he met NIA investigators and assessed the progress in the probe into the blast at Khagragarh in Burdwan town on October 2 that claimed the lives of two suspected terrorists of Jamaat-ul-Mujahideen Bangladesh.
Three persons, including two women – one of them the widow of a suspected terrorist who died in the blast, had been interrogated by NIA.
Taking over the probe of the blast following a directive by the Union Home Ministry, the National Investigation Agency (NIA) had secured custody of Hasem Molla alias Badru Alam Molla, Razia Bibi and Alima Bibi on October 13.
A three-member NIA team had also visited the blast site on Sunday to look into allegations that an office of the ruling Trinamool Congress was located there.
Kumar visited the blast site. He inspected the house where the blast took place, examined the rooms and went to the terrace of the building.
After spending about 30 minutes, he went to visit another house at nearby Mathpara on Badsahi Road where 40 improvised hand grenades were found.
NIA investigators during a search operation with Burdwan district police found the Improvised Explosive Devices from this house of Rezaul Karim.
The police said that the NIA Director General later set out for Beldanga in Murshidabad district to visit the house where one of the dead terrorist Shakil stayed on a rent.