Submission + - Bomb suspected in Russia train crash (guardian.co.uk)
Early indications from government officials suggest a bomb may have been the cause, after investigators found a three-foot crater beneath the rails.
Russian Railways, the state-owned train operator, said four carriages of the luxury Nevsky Express came off the tracks near the town of Bologoye, 200 miles from Moscow, just after 9.30pm local time [on November 27].
In addition to those killed, more than 50 injured passengers required treatment at hospitals in St Petersburg.
An officer at the emergencies ministry said: 'A one metre-diameter hole has been found next to the railway track. Witnesses heard a loud slap before the accident. All of this could point to a possible act of terrorism.'"
President Dmitry Medvedev has ordered the Federal Security Service (successor to the KGB) to investigate the "accident".
More information is available in a news report published by Voice of America.
Also, the "New York Times" has published a report (supplied by the Associated Press) that provides additional information.