MOSCOW, July 2 (Xinhua) -- A cargo train derailed on Friday after a bombing by unidentified men in Russia's northern Caucasian republic of Dagestan, the Itar-Tass news agency reported.
The incident occurred at 05:10 Moscow time (0110 GMT) on the 2,321-km-long Manas-Achi rail track, the news agency quoted local railway authorities as saying.
According to preliminary reports, the train's driver and his assistant were injured.
"Twelve cars and the locomotives were derailed. Seven of the 12 cars were overturned," a local policeman told the RIA Novosti news agency.
Local authorities said the incident which derailed the Derbent-bound train was a result of a sabotage.
An investigation is underway and authorities are also taking measures to restore the interrupted railway traffic.
Russia's restive northern Caucasus republics, particularly Chechnya, Dagestan and Ingushetia, have been plagued by violence that particularly targeted policemen and law-enforcement officers, who local rebels view as representatives of Moscow.