Ferrovie dell stato has stated today towards RAI that the works should not have started until this train had passed. It looks very much like the workers did not have possession of the tracks. Some sourced claim that the manager had not received permission and was possibly not even on site.
Interesting is the fact that the train is in relatively pristine condition if you look at RAIs videos - they definitely didn’t already have heavy machinery in place or they did put it on another track (which is unlikely as the according to the Ferrovie statement the accident happened on the track they were supposed to work on). Another interesting fact is the speed of the train - which had two conductors onboard,btw: The train was doing 160km/h - this is not a speed you use in a segment that you expect works on another track to be done.
Personally if I had to bet money on one theory I would guess the manager (who was the one certified to work with Ferrovie) was not on site/not concentrated, the workers were told when the last train goes through/there was some miscommunication with the guys on scene and they either mistook another train as the “last” train or the “last” one was late/not in their schedule and they started simply by the clock.
Or someone in the control center fucked up beyond believe and that is much more unlikely tbh.
Anyway, those poor bastards, poor families and friends and even poor villages. They basically are all locals.