The chemical factory that leaked gas into a coastal Indian city on Thursday morning, killing at least 12 people and putting hundreds in hospital, was operating illegally until at least the middle of 2019, documents show. In an affidavit filed by LG Polymers in May 2019, as part of its application to expand the plastic plant’s operations, the South Korean multinational admitted it was operating its polystyrene plant without the mandatory environmental clearance from the Indian government.