People associated with the BJP instigated others to burn firecrackers on Diwali, leading to an overnight increase of over 100 points in the national capital's air quality index, Delhi Environment Minister Gopal Rai alleged on Monday, reported news agency PTI. 

At a press conference, Gopal Rai said the firecrackers burnt in Delhi were sourced from Uttar Pradesh and Haryana, and that certain individuals, including the police of these states, permitted the transportation of those firecrackers to the city, reported PTI.