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Twenty-seven years after one of the world's worst industrial accidents, the Indian Bhopal disaster is causing problems for next year's London Olympic Games.
According to victims' rights groups, 25,000 people were killed in the gas and chemical leak at the Union Carbide pesticide plant.
The firm is currently owned by Dow Chemicals, which is helping to build part of the main Olympic Stadium. But activists and politicians are now calling for organisers to reconsider the deal.

Al Jazeera's Tim Friend reports from London.

Source: Al Jazeera