Derailment probe: Kanpur-Jhansi track videographed
The whereabouts of the ticket collectors and staff in the two coaches is also not known, Saxena said, noting that a third AC coach, BE, also suffered damage.

General Manager of North-Central Railway Arun Saxena told reporters here that an investigation will be conducted by the Commissioner of Railway Safety.
Asked if someone could have tampered with the tracks, he said the Commissioner of Railway Safety, who will arrive here from Kolkata tomorrow, would be able to provide an answer to it.
"Anyone with further evidence or statements can approach the Commissioner to record his statement," he said.
"We did videography of the whole track for scrutiny," he added.
The S1 and S2 coaches of the train bore the major brunt of the damage as the bogies smashed into each other.
The whereabouts of the ticket collectors and staff in the two coaches is also not known, Saxena said, noting that a third AC coach, BE, also suffered damage.
Two other coaches, S3 and S4, also went off track, but did not suffer serious damage, Saxena said.
Saxena said it would take 36 hours for the Kanpur-Jhansi track to be restored, with 300 engineers and technical staff deployed.
More than 100 people have been killed and over 200 injured in the disaster.
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