The Times of India. Five coaches of the passenger train travelling from Kolkata to Mizoram derailed along with its. At least seven passengers were injured after Sairong Express coaches derailed near Guwahati, Assam, around 7:00 AM on Wednesday.Officials told CNN-News18 that most of the derailed coaches. Eight elephants died and one another was injured after a herd was hit by the Sairang-New Delhi Rajdhani Express in Assam‘s Hojai district in the early.