Alamnagar (AMG): A coach of Dibrugarh bound Awadh-Assam express today derailed at the Alam Nagar railway station of state capital, said Government Railway Police. GRP added that, the reason of derailment of the coach was yet to be ascertained. None was injured in the incident. Railway experts here said the speed of the train was very slow owing to the closeness of Charbagh railway station thus a major rail accident was averted. However, the rail line was disrupted for couple of hours and senior railway officials have rushed to the spot.