As many as nine long-distance passenger trains are running late due to fog and low visibility conditions, the railways said on Saturday.

While Darbhanga-New Delhi Clone Special and Barauni-New Delhi Clone Special are running late by over 4 hours, Raigarh-Hazrat Nizamuddin Gondwana Express, and Raxaul-Anand Vihar Terminal Sadbhavana Express are running behind schedule by 3:00 hours and 3:30 hours respectively, officials said.