Around 9:00 a. m. on 13.10.2015, the locomotive crew of fast train No. 1621 noticed a smoke in the engine compartment of the locomotive while moving along track No. 1 from Sofia to Plovdiv in the section between Elin Pelin and Vakarel stations. The crew members took immediate action to put down the smoke and managed to extinguish the raising fire with the locomotive fire extinguishing installation and the portable fire-extinguishers available.
There were no passengers and railway staff injured. Damages were caused to the electrical locomotive No 44-169. The occupied the railway section from 8:49 to 10:11 hours.