Six coaches and the locomotive of the Kolkata-Sairang Express derailed near Digaru on the outskirts of Guwahati, Assam. Further details are awaited. Six coaches of the Kolkata-Sairang express have derailed at Digaru railway station at around 6:54 a.m.. Seven coaches of the Kolkata-Sairang Express derailed at Digaru Railway Station in Assam's Kamrup (Metro) district around 6:54 am on Wednesday. No casualties have been reported so far, while.