Kolkata Police seize 110 kg of banned firecrackers, arrest one ahead of Kali Puja festival, part of crackdown on illegal fireworks trade in the city. Kolkata: The Kolkata Police have seized around 110 kg of banned firecrackers from an abandoned building in north Kolkata and arrested a 19-year-old youth ahead of Kali Puja, a senior police officer said on Thursday.