"Basically we are assisting, providing whatever help we can to the state police force which is investigating the case," NIA Special Director General Navneet Wasan told reporters after visiting the blast site on Church Street in the central business district.
Responding to a question whether the state police has made any specific request to NIA, he said, "...I will discuss with them, we will provide all assistance whatever is required and whatever we can give in the investigation of the case."
The blast triggered by an Improvised Explosive Device placed in a potted plant had occurred outside the restaurant on December 28 claiming the life of 38-year-old Bhavani who was on a visit to city from Chennai.
Speaking to reporters at Chitradurga, Chief Minister Siddaramaiah said "inquiry is going on; no organisation has claimed about being behind the attack yet...Investigations are on; we are in touch with the central government, police is coordinating with the NIA," he added.
Bengaluru central area, where much of the New Year celebrations happens and the blast occurred outside a restaurant on Church Street on Sunday, would be under thick security blanket with everyone being frisked.