The police are yet to get any definite clues to Wednesday’s blast in Malleswaram in the city that injured 16 people. Karnataka Director-General and Inspector-General of Police Lal Rokhuma Pachau announced a Rs. 5 lakh reward to anyone who provides credible information about the blast.
Mr. Pachau told reporters that investigations were on and special teams under Joint Commissioner Pronab Mohanty were working on the case.
The city police are being assisted by Central Forensic Science Laboratory officials, bomb disposal squads and teams from the National Investigation Agency and the National Security Guard.
Preliminary investigation revealed that ammonium nitrate and a timer were used to trigger the blast.
Bangalore City Police Commissioner Raghavendra H. Auradkar said the motorcycle in which the improvised explosive device (IED) was placed was traced to a man in Chennai who is being questioned.
Mr. Auradkar said the police were scouring the debris for clues. Though ad obtained from the site of the blast coins, a toothbrush and other materials which are being examined. CCTV footage from buildings around the blast site does not seem to have yielded anything substantial. The CCTV installed in the house opposite the blast site focussed only on the house and the staircase while that another CCTV footage from the Bharatiya Janata Party office covered its own building. The CCTV at a temple nearby was pointed in a different direction. All other CCTVs in the vicinity are being examined and the police are also checking cellphone call records.
On whether the city police had any prior information about the blast, Mr. Auradkar said they did not, adding that they had received a general advisory to step up security in the wake of IPL cricket matches and the Assembly elections.
On Thursday, Chief Minister Jagadish Shettar and State BJP president Pralhad Joshi visited the blast site and the injured in hospital .
Mr. Shettar told reporters that the blast, though serious, should not be politicised.