Thane train mishap: Overcrowding? Brushing of bags? Or did metal object do it?

A tragic accident near Mumbra station resulted in four fatalities and nine injuries, prompting a railway investigation. Initial theories suggest the incident occurred as two packed trains crossed on a curve, potentially causing passengers on footboards to be pushed or lose balance due to brushing backpacks. Officials are also examining the possibility of a metal object striking the train and the role of overcrowding.