The spot where the accident occurred on Monday, where 13 people were injured of which four were killed, has a sharp curve, and commuters have long reported experiencing severe jerks while passing through it

A visit to the accident site near pole number 40/4, on the Kalyan end of Mumbra station, revealed not one but two such curves, exactly where the mishap occurred. Passengers say these sharp bends often cause violent jolts in speeding trains

The Central Railway has launched an inquiry, even as multiple, conflicting theories have surfaced over what exactly triggered the mass fall

The train was reportedly travelling at around 55 kmph when the incident occurred

While train operations remained unaffected, Railway officials said they are investigating all angles, as there is no clarity on how eight people could have fallen off simultaneously