A second train has exploded on Russia's main railway line in the Siberian region of Buryatia in recent days. A person who witnessed the November 30 explosion confirmed media reports about the blast on the Baikal-Amur Main Line, saying the explosion occurred on the segment bypassing the Severomuisk tunnel, where a train also exploded one day earlier. Ukrainian media reports cited sources in law enforcement and military entities as saying that the second train exploded while on a bridge by the tunnel. Russian officials have yet to comment on the situation. To read the original story by RFE/RL's Russian Service, click here.