Police Commissioner Shankar Bidri suggested it may be due to crackers bursting. The reason for the blast is not known precisely and the officials are investigating the matter. No casualities have been reported. The blast sparked instant panic in the city. However, Shankar Bidri assured the people to stay calm. Police have been deployed in the area and security has been alerted in Bangalore. "The bomb was dropped into the BMC dustbin which later burst", said Swaroopa, a resident.