On the 40th anniversary of the Bhopal gas tragedy, members of the Sambhavna Trust Clinic, providing free medical care to survivors, on Monday night paid homage to victims by holding a candlelight vigil near the now defunct Union Carbide factory in the city.

Highly toxic methyl isocyanate gas leaked from the Union Carbide India Limited (UCIL) plant here on the intervening night of December 2 and 3, 1984, killing 5,479 persons and maiming more than five lakh others in one of the world's biggest industrial disasters.

Four decades after the Bhopal Gas Tragedy, victims still await justice as the case languishes in a prolonged legal battle with 28 judges and inadequate sentences.

Just after midnight as poisonous plumes of smoke wafted through the Indian city of Bhopal four decades ago, Gas Devi was born, gasping for every breath.

Survivors march on the 40th anniversary of the Bhopal gas tragedy, demanding justice and accountability from Union Carbide and Dow Chemical

Saroj Bhattacharjee, 81, calls it the “biggest trauma” of his life. The Edmonton man was a maintenance engineer at Union Carbide in Bhopal, India, in 1984, when the toxic gas methyl isocyanate leaked from a storage tank.