GUWAHATI: Six coaches 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.“Six coaches of the Kolkata-Sairang Express have derailed at Digaru railway station at around 6.54am today. So far, no casualties have been reported. Our senior officials have rushed to the spot,” Sharma said.The cause of the derailment is not yet known.(With agency inputs)