Kolkata Feb 8 /---/Train services of SE railway on the Chakradharpur- Rourkela section were disrupted for more than seven hours since 00.45 hrs today following derailment of empty wagon of a goods train due to an explosion on the track. However, there was no injury or casualty to anyone, according to SER sources. For the safety and security of the passengers, all train movement in both UP & DN directions was immediately stopped. Train services resumed at 0755 hrs. (EOIC)