Kolkata : A girl was killed and three persons were grievously wounded when a gas filled cylinder exploded in central Kolkata, police said on Sunday.
Police said they were investigating how the cylinder packed with helium gas, used for filling balloons, exploded near a pharmacy at the Amherst Street-Keshab Sen Street crossing on Saturday midnight killing the teenaged girl instantly and critically burning three others.
The injured have been admitted to to Nil Ratan Sircar Hospital.