The bomb planted in front of the Bharatiya Janata Party’s office in Karnataka on Wednesday contained ammonium nitrate, shrapnel and a timer, according to the forensic laboratory that analysed the explosive.
Police officials have compared the ingredients of the bomb with those used in the Hyderabad blasts in February this year. Though the bomb used in Bangalore was a more powerful one compared to the one used in Hyderabad, the damage was lesser.
In Bangalore, the bike on which the bomb was planted was parked between two vehicles. The impact of the blast was largely borne by the vehicles parked around the bike including a van of the Karnataka State Reserve Police.
While the blast killed scores of people in Hyderabad’s Dilsukhnagar, which is a crowded marketplace, not too many people were within the vicinity when then Bangalore bomb went off.
The police believe that three people were possibly involved in the attack. They were detected by the CCTV cameras at the site moving around in a ‘suspicious manner’.
The police have sent the footage for further digital forensic analysis as the images are hazy.
The National Investigation Agency and the National Security Guards are now trying to recreate the sequence of events that led to the blast.
The Bangalore police are likely to hand over the probe to the NIA in a few days. The NIA is already probing the Hyderabad blasts case.
The agency has questioned several suspects and terror operatives but is yet to get a concrete lead about the case.