Empty wagon/coaches accidents are pretty common all over IR. Only thing is that IR has stopped releasing news about them only if no disruptions occur. Such empty wagon/coaches tasks are usually done by junior(younger) staff and mishaps happen due to over speeding. IR as a policy makes TSR/PSR at such locations where such mishaps occur apart from sending involved staff for refresher course. I expect you'll find PSR/TSR at all previous mishap locations.