Commuter train hits buffers in Sydney injuring 12 passengers

At least three people were initially trapped but all passengers have since been freed, the spokeswoman said, and the incident was still unfolding nearly an hour after it occurred.

Emergency services were notified just after 10am.

Fire and Rescue NSW were assisting the SES and multiple ambulance crews at the scene.

One traveller Brett Saunders described the experience when train hit buffers at the end of the line as "horrifying".

Train services have been suspended between Richmond and Clarendon in both directions.

The cause of the accident at the Richmond Railway station in the northwest of the city remains unclear.

A total of 16 people were injured in the crash, NSW Ambulance said.

Sixteen people have been taken to hospital with varying injuries.

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

The train involved was a new Waratah train but Mr Collins said nothing indicates the other Waratahs needed to be halted for now.

The 15-year-old said it felt as though the train had sped up after leaving East Richmond and said he had heard the brakes may have failed. "There was a huge amount of dust", he said.

A marathon meeting between NSW rail workers and Sydney Trains bosses has wrapped up with no agreement as workers demand a pay rise and improved working conditions. "We will provide more information as it becomes available", it tweeted.

"It is very concerning [and our] first concern is for those involved in the incidents", he said.

"Safety is our number one priority and we will now work to determine what caused the incident", said Transport and Infrastructure Minister Andrew Constance.

  • Joey Payne