Bangalore Police Commissioner M N Reddi on Monday said special teams have been deployed to investigate Sunday's blast in which a woman was killed and three others were injured.
"An improvised explosive device was used in the blast. Investigations are on; special teams are examining all clues. The possibility that it might be a terror attack cannot be ruled out. However, it's too premature to say anything as no one has claimed any responsibility," said Reddi.
Meanwhile, Deputy Chief of Police (DCP) Sandeep Patil said that a forensic team had investigated the area and the statements of eye witnesses are being taken.
"The forensic team investigated the area, and the CCTV footage will be gone through. Investigation is underway. We are going to talk to the eyewitnesses and our teams are also going to Pune and Chennai," said Patil.
Earlier on Sunday, a woman was killed and three others were injured in an explosion triggered by an Improvised Explosive Device (IED) in front of the restaurant.
The blast occurred around 8.30 p.m. near the Coconut Grove restaurant in Bangalore's Church Street.
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A compensation of five lakh rupees was announced by the Karnataka Chief Minister Siddaramaiah, to the kin of the woman who was killed in the blast.
Meanwhile, security has been beefed up in New Delhi following the incident.