Thirteen of the tanks caught fire and spread oil over an area of 600 square meters, Interfax reported. The fire was extinguished Tuesday morning.
No deaths or injuries were reported.
This was the fourth time in the past week that side frames of freight cars have broken off on Russian trains, RIA-Novosti reported. Transit safety watchdog Rostransnadzor appointed a special meeting for Tuesday to discuss measures for preventing such accidents in the future.