TWELVE people have been injured after a train hit a buffer in Sydney's west this morning.

Emergency services are at to Richmond station where it is believed a train hit a buffer.

Three people are trapped, according to Fire and Rescue NSW.

Two people have suffered severe injuries.
Two people have suffered severe injuries. TNV

Seventeen ambulances and three rescue helicopters have been sent to the scene to treat a number of patients with minor injuries.

Emergency services at the scene.
Emergency services at the scene. Seven News

NSW Ambulance say 10 people have suffered minor injuries while two people have severe injuries.

Witnesses have described a scene of chaos, with the train apparently hitting the buffer at the end of the line.

Passengers are treated after the accident.
Passengers are treated after the accident. TNV

One caller to Sydney's 2GB radio who saw the crash said there was an "almighty bang".

He said the train came in at speed and hit the buffer and rebounded. "There was a huge amount of dust," he said.

"It's all chaos here," another caller, Steve, told the station.

The train hit a barricade this morning.
The train hit a barricade this morning. Nine News

Sydney Trains say the service from Richmond to Central has been cancelled.

Union negotiations over rail workers pay have been suspended this morning.

Transport for NSW bosses and union leaders have agreed to halt their discussion until after lunchtime so Sydney Trains can have all hands on deck to deal with the accident.

Passengers who were on board the train.
Passengers who were on board the train. Seven News

It comes as Sydney Trains chief executive Howard Collins confirmed a new offer had been made to the collective rail unions.

The union had been pushing for a rise of 6 per cent. Sources told The Daily Telegraph an offer around 3 per cent would be made today- in exchange for productivity gains.

Sydney Trains boss Howard Collins said: "This is a most unusual incident" and that most of the injuries are "bumps and bruises".

Blood on the train steps.
Blood on the train steps. Brett Saunders
News Corp Australia

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