NEW DELHI — A dense morning fog on Tuesday ******* flights in and out of New Delhi’s airport and disrupted road and train travel in northern India for a third straight day.

According to First Post over 500 flights were ******* and more than 20 cancelled which includes 97 international flights.

More than 60 flights were affected at Indira Gandhi International Airport, the Press Trust of India news agency said. A backlog of flights caused delays even after the fog had lifted.

Visibility was somewhat better than the previous two days, when hundreds of flights were ******* or cancelled.

The thick fog made for hazardous road conditions, and forced the cancellation or late departure of many long-distance trains. Indian media reported at least five fatalities in fog-related road accidents.

“The area I come from has no streetlights,” said Dhurinder Singh, the 50-year-old driver of a three-wheeled, motorized taxi known as an auto rickshaw. “There could be a pile-up of cars ahead on the road that causes me to have an ********.”

Fog often descends on northern India in the winter months. The morning low in New Delhi on Tuesday was 8 degrees Celsius (46 Fahrenheit).