Moscow - The death toll in Russia's train derailment rose to at least 25 on Saturday, with a further 100 passengers injured, according to local reports. The high-speed train from Moscow to St Petersburg came off the rails on Friday evening, near the city of Bologoye - with initial reports saying a 1-metre-wide crater was found under the tracks.
Health Minister Tatyana Golikova said Saturday morning that a further seven victims were suspected to still be inside the wreckage of the train.
Around 95 survivors have been taken to local hospitals.
Fresh reports say that four carriages of the "Neva Express" left the tracks in the incident. There were around 500 passengers on the train, which links Russia's capital with St Petersburg.
Russian President Dmitry Medvedev has asked the country's internal security agencies to investigate the possibility of a bomb attack.
In attack on the line in August 2007 left 60 injured. The line is a key transport link in Russia, and is often fully-booked.
The head of the Russian Railways (RZD), Vladimir Yakunin, travelled to the scene of the disaster late Friday night, and announced that the line would be shut indefinitely.
A mobile hospital has been flown to the emergency scene, with extra hospital workers, doctors, rescue workers and police reporting for duty.
According to initial reports, there were scenes of chaos in the immediate aftermath of the incident, with several police officers who happened to be travelling on the train attempting to prevent panic among the surviving passengers.