A freight train loaded with grain has been derailed after an explosive device went off at a railroad in Russia's North Caucasus republic of Dagestan, a spokesman for the local Interior Ministry said on Sunday, RIA Novosti reported.
"There is no information so far about the casualties. A group of investigators are working at the scene of the incident," he said.
This is the second blast at a railroad in Dagestan since the start of this month. Another freight train was derailed on July 2 by a blast on a railroad in Karabudakhkentsky district, near the republic's capital, Makhachkala. The train driver and his assistant were injured.
Sporadic terrorist attacks and militant clashes are common in Russia's largely Muslim North Caucasus republics, especially Dagestan, Chechnya and Ingushetia.