Finnish State Railways (VR) says sparks apparently reached the trackside when vibration caused a protective cover on the loco’s firebox to detach.
The old locomotive continues its journey eastwards from Riihimäki to Kouvola on Friday. Its visit is part of celebrations to commemorate 150 years of rail travel in Finland.
Steam-driven locomotives all but disappeared from Finnish railways during the early seventies. However, enthusiasts and a private excursion firm have managed to keep steam traction alive courtesy of special events during the summer months.