The Tamil Nadu government formed a three-member committee to investigate the ammonia gas leak at a seafood processing factory near Periyapalayam in Tiruvallur district.
The leak occurred at St Peter's Paul Seafoods Exports Private Limited, killing at least two people and affecting more than 60 workers.
The committee comprises S. Ananth (Director of Industrial Safety and Health); M. Saravanakumar (Member Secretary of the Tamil Nadu Pollution Control Board - TNPCB); and the Additional Director of Public Health and Preventive Medicine.
Ammonia is a colourless, pungent-smelling, toxic and corrosive gas widely used in refrigeration, seafood processing and fertiliser industries.
Exposure to high levels of ammonia can cause eye irritation, breathing difficulty, chest pain, burns and bleeding from the nose or mouth.