India's Supreme Court has banned fireworks in the capital Delhi, in the run‑up to the Hindu festival of Diwali.
The court said it wanted to test if banning fireworks would make a difference to Delhi's air quality, ranked among the worst in the world.
The ban on the sale and distribution of firecrackers will last until 1 November.
Diwali, the most important Hindu festival in north India, celebrates the victory of good over evil.
The Supreme Court order came in response to several petitions, asking for a restoration of the ban it had first ordered in November 2016, before temporarily lifting it in September.
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