No injuries reported so far; loco pilot failed to control train’s speed while giving precedence to another train, authorities said. A major train accident was reported in Assam this morning after seven coaches of the Kolkata-Sairang Express derailed near Digaru, on the outskirts of Guwahati. Kolkata–Sairang Express derails in Digaru near Guwahati. Several passengers injured, while Northeast Frontier Railway reports no.