The authorities in Russia are treating the crash of an express train in which at least 25 people were killed as a possible act of terrorism.
A crater has been found near the track, raising suspicions that a bomb may have been used to derail the train. The prosecutor-general has opened a criminal case on terrorism charges, Russian news agencies report. The train crashed in remote countryside as the train travelled between Moscow and St Petersburg.
Hundreds of rescuers and officials have been working throughout the night at the scene near the town of Bologoye in Tver region. Some reports say that as many as 39 people have died. The train was carrying more than 650 people. More than 90 are in hospital, some of them