After Tuesday's bright sunshine, Delhi again came under grip of thick fog. It disrupted movement of trains with six of them being cancelled and over two dozen running behind schedule. Sitamarhi-bound Licchavi Express and Gaya-bound Mahabodhi Express were cancelled while two dozen trains were running late, some by five to ten hours. However, the Flight operations were normal at Indira Gandhi International airport. The National Capital region is still in the grip of cold wave and minimum temperature came down 5.6 degree Celsius this morning. Met Department predicts that temperature will further decrease to four degree Celsius on Thursday. <br/>