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More than 100 people are now known to have been killed in a train crash in eastern India.
At least 145 people were injured - many critically - when two trains collided overnight in West Bengal.
Police said Maoist rebels sabotaged the track causing the Calcutta-Mumbai passenger train to derail, throwing five of its carriages into the path of an oncoming goods train.
But a spokesman for the Maoist rebels called the BBC to deny any involvement.
A railway spokesman said 78 bodies had been recovered, but that more than 30 remained trapped in three carriages that were crushed by the freight train.
Officials said rescue workers were still working to free survivors from the wreckage in the Jhargram area of West Midnapore, about 150km (90 miles) west of Calcutta.
The area is known to be a stronghold of Maoist rebels.