On Wednesday morning, six coaches of the Kolkata-Sairang Express derailed at Digaru railway station in Assam. GUWAHATI: Seven coaches, including the engine, of the Kolkata-Sairang Express derailed at Digaru railway station in Assam’s Kamrup (Metro) district around 6.54am on Wednesday.The train was travelling from Sairang in Mizoram to Kolkata when the accident occurred.Several passengers were reportedly injured.No casualties have been reported so far.Kapinjal Kishore Sharma, chief public relations officer (CPRO) of Northeast Frontier Railway, told news agency ANI that senior railway officials had rushed to the spot following the incident.The cause of the derailment is not yet known.(With agency inputs)