No injuries reported so far; alternate trains arranged to to help passengers reach their destinations. Six coaches of the Kolkata–Sairang Express derailed at Digaru railway station in Assam early Wednesday. Officials are investigating and have dispatched senior staff to the. The Kolkata-Sairang Express left Chitpur in Kolkata and was headed to Sairang, Aizawl, in Mizoram, when it derailed on the outskirts of Guwahati.