KYIV, Nov 30 (Reuters) - An operation conducted by the Security Service of Ukraine (SBU) detonated explosives on a railway line in Siberia that Russia uses for military supplies, a Ukrainian source told Reuters on Thursday.
Such an attack, more than 4,000 km (2,480 miles) from Ukraine, would be a striking demonstration of Kyiv's ability to conduct operations deep inside Russia.
Reuters could not independently verify the account or whether the rail route is used for military supplies.
Russian sources acknowledged that a train had caught fire in the area, but made no mention of explosives.
In a statement online, it said rail traffic had been rerouted, slightly increasing journey time, but that transport had not been interrupted.
Persons:
Tom Balmforth, Gleb Stolyarov, William Maclean
Organizations:
Security Service of Ukraine, Reuters, Russia's, Russian Railways, Thomson
Locations:
Siberia, Russia, Ukrainian, Buryatia, Mongolia, Ukraine, Russian