Extraordinary CCTV footage from inside a train driver's cab in India showed a young man apparently derail a train after dumping his bag on top of the vehicle's throttle while he was on a video call.

The train, which was previously stationary, jumped its tracks and climbed onto a platform in the incident, in Mathura, Uttar Pradesh, on the night of Tuesday 26 September.

A woman was injured in the shocking incident.

The footage opens with a man in a white shirt, presumed to be a Railways employee, at the controls.

He appears to bring the train to a controlled halt and then picks up a bag from the floor of his cab and leaves.

A second man, in a blue T-shirt, then enters and closes the cab door.

The man is on a video call on his phone and, with his attention seemingly entirely on that, takes off his bag and dumps it on the control panel, including the throttle!

The cab door then swings open and it is evident the train is now picking up speed.

Caught by surprise, the man -- identified as Sachin -- grabs at the controls and slams on the brakes, but still doesn't let go of his phone or end his call.

The train then rolls back off the platform after which he takes a few more seconds to finally wrap up his chat and end his call.

Divisional Railway Manager Tej Prakash Agrawal said five people, including Sachin, had been suspended and a high-level probe ordered to ascertain the "exact cause of the incident".

Authorities are also looking into the possibility that Sachin, who reportedly went into the cabin to get keys, was drunk.

A stationary train jumped its tracks and climbed onto a platform in Uttar Pradesh's Mathura on Tuesday night after a man - preoccupied with a video call on his phone - dumped his bag on the throttle. A woman was injured in the shocking incident and a high-level probe has been ordered.
CCTV footage of the incident opens with a man in a white shirt, presumably a Railways employee, at the controls. He appears to bring the train to a controlled halt and then picks up his bag - which is on the floor of the cab - and leaves. A second man, in a blue t-shirt, then enters and closes the cab door.

At this point he is already on a video call on his phone and, with his attention on the device, takes off his bag and dumps it on top of the control panel. The cab door, apparently unlocked, then swings open and it is evident the train is now travelling at a significant speed.

Caught by surprise the man - identified as Sachin - grabs at the controls, without letting go of his phone, and slams on the brakes. The train then rolls back off the platform.

Divisional Railway Manager Tej Prakash Agrawal said five people, including Sachin, had been suspended and a high-level probe ordered to ascertain the "exact cause of the incident".

Authorities are also looking into the possibility Sachin - who went into the cabin to get keys - was drunk.