Tension gripped the city late Thursday after an unidentified person on a motorbike exploded a firecracker in front of AKG Centre.
Grainy surveillance camera footage showed the person hurling what seemed to be a throwdown-type cracker on the road in front of the CPI(M) State headquarters.
A police officer said the preliminary crime scene investigation had revealed that the explosive contained no shrapnel. The City police have registered a case for illegal use of explosives.
