Addressing a news conference here last evening, Pranay said that militant groups, which operate from neighbouring Bangladesh, could have played a role in the blasts. "We have been saying that Bangladesh has camps in their territory of our militant groups. There are about 25 camps that are existing there or transit places where the insurgents are staying," Sahay said. Sahay also said that initial investigation suggested that the blasts were similar to those, which have taken place recently in other parts of the country.
"In terms of certain blasts which have happened, there appears to be some amount of similarity, which only after that chemical examination would say but then in terms of the pattern which has been used, there is a similarity. There is a commonness in the pattern of the incidents happened in other parts of the country and in this place," he said.
Meanwhile, a team of National Security Guards and forensic experts investigated the blast sites and collected evidences.
Manash Paul, a senior journalist and militancy expert while talking to reporters said that a specific pattern was followed in order to create maximum panic as all the blasts exploded in hugely crowded places.
Ratan Banik, an eyewitness said, "I was saved as my vegetable shop was surrounded by customers. There was huge, smoke everywhere and people were in a pool of blood. My brother who was sitting next to me was also injured."
At least 76 people were injured in the serial bomb blasts that rocked Agartala on Thursday evening. The first blast took place at around 7:30 p.m. at the Radhanagar bus stand, and minutes later there was another blast at Maharajganj Bazar in the heart of the city.
Yet another blast rocked GB Bazar and the fourth blast took place at around 8:15 p.m. near Kathiababa Ashram on the outskirts of the Capital.