The Bhopal disaster, also referred to as the Bhopal gas tragedy, was a gas leak incident in India, considered the world’s worst industrial disaster.It occurred on the night of 2–3 December 1984 at the Union Carbide India Limited(UCIL) pesticide plant in Bhopal, Madhya Pradesh. Over 500,000 people were exposed to methyl isocyanate (MIC) gas and other chemicals.The official immediate death toll was 2,259. The government of Madhya Pradesh confirmed a total of 3,787 deaths related to the gas release. The cause of the disaster remains under debate. The Indian government and local activists argue that slack management and deferred maintenance created a situation where routine pipe maintenance caused a back-flow of water into a MIC tank, triggering the disaster.