The first derailment occurred around 06:25 am, when seven coaches of Jabalpur-bound Shaktipunj Express jumped the tracks near the Obra Dam station in the Sonbhadra district of Uttar Pradesh, in third such mishap in the state within a month.
There was no report of any injury in the mishap, Railway ministry spokesperson Anil Saxena said in New Delhi.
As the train, which was coming from Howrah, went off the track, the rail traffic on the Chaupan-Singharauli route was disrupted.
Platform number 15 at the Delhi station was closed for restoration work, a railway official said.
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Even as the authorities and the passengers dealt with the aftermath of these two derailments, another news came, again from UP, that a fracture in the track was detected between Farrukhabad and Fatehgarh, minutes before the Kalindi Express was scheduled to pass.
Alert locals managed to get the Delhi-Kanpur Kalindi Express stopped before the damaged portion of the track, police officials said.
Official sources said the train was running at a speed of about 40 km/hr which might have prevented any injuries being caused to the passengers.
East Central Railway PRO RK Singh said the seven rear coaches of the train had derailed. They were later detached and traffic resumed at the derailment site.
All passengers were accommodated in the remaining coaches and the train left within an hour, officials said.
On August 20, 14 coaches of the Kalinga-Utkal Express had derailed in Muzaffarnagar, killing at least 23 people and leaving scores injured.
Three days later, nine coaches of the Delhi-bound Kaifiyat Express had derailed in the Auraiya district, leaving around 100 passengers injured.