On the possible cause for the accident, Railway Board member A P Mishra said that exact cause has to be ascertained. It could have been "due to excessive heat causing track expansion or some miscreant activity," he said, adding that the railway track could be cleared by tomorrow morning.
"Assistant Loco Pilot has infomed railway officials that he had seen some obstruction in the track and he tried to apply brake. While 10 coaches passed, the last seven bogies derailed", Mishra said, adding that Railway Minister Mukul Roy is likely to reach the spot tonight.
Image: A volunteer extends a helping hand to a trapped passenger, who's hand can be seen, inside a fallen compartment of Doon Express, a passenger train which derailed in Jaunpur, Uttar Pradesh state, India, Thursday, May 31, 2012.