Thick fog covers Kolkata; causes low visibility, delays flights

A thick sheet of fog covered Kolkata and hence there was very low visibility at the airport. This is why the many flights could not take off as per the schedule. On the other hand, landing of multiple flights has been delayed too<br /><br />Earlier on Monday morning, Delhi

source https://news.abplive.com/videos/news/india-thick-fog-covers-kolkata-causes-low-visibility-delays-flights-1407027