Cold conditions prevailed across north India on Sunday, with the Amarnath yatra base camp being the coldest recorded place in Jammu and Kashmir at minus 4.3 degrees Celsius and parts of Punjab, Haryana, and Rajasthan reporting minimum temperatures between three and seven degrees Celsius.

Delhi Chief Minister Rekha Gupta on Sunday criticised those who protested at India Gate over deteriorating air quality, questioning the absence of their demonstrations during previous administrations when air pollution was a persistent issue.

IndiGo will carry out a "root cause analysis" into the flight disruptions that has happened due to a combination of factors and the focus now is to stabilise operations, which is expected by December 10, a senior airline official said on Sunday.

 Goa Chief Minister Pramod Sawant on Sunday said four staff members of the `Birch by Romeo Lane' nightclub have been arrested following the fire tragedy, and he has ordered action against officials who allowed the club to operate while flouting rules.

Around 10 fishing boats anchored in Ashtamudi Lake were gutted in a massive fire in the early hours of Sunday, police said.

 IndiGo has processed refunds totalling Rs 610 crore so far against cancelled or severely delayed flights, and delivered 3,000 pieces of baggage to passengers across the country as of Saturday, the government said on Sunday.

 Allison Hooker, the US Under Secretary of State for Political Affairs, is on a five-day visit to India from Sunday to advance bilateral strategic and economic ties.

IndiGo CEO Pieter Elbers on Sunday said the airline will be operating around 1,650 flights on Sunday and "step by step, we are getting back".