At least seven people were killed and 24l others injured after 11 coaches of a New Delhi-bound train derailed in India's eastern Bihar state on Sunday.<br /><br />East Central Railway general manager, L.C. Trivedi, said rescuers were searching for the coaches for people who may be trapped inside.<br /><br />The cause of the accident has yet to be identified. <br /><br />Local media reports said that a rail fracture may have led to the derailment of Seemanchal Express that took place about 30 kilometres north of state capital Patna.