A TEENAGE boy was knocked unconscious and is suffering serious head injuries after being slammed into the side of a passing express train tonight.

Police allege two boys became embroiled in a heated argument and began swearing angrily at each other at Cabramatta railway station about 7.10pm.

But the profanities quickly escalated into punches, with one of the boys hitting the other before turning on the security guard who attempted to calm them down.



Witnesses said the boys then grabbed one another as a train was passing through the station, before one of them was thrown into the moving train.



It is believed both teenagers were drinking before getting on to the railway platform.



One eyewitness, who wanted to remain anonymous, said he thought the boy was dead after colliding with the speeding train. "They smashed each other into the side of the train so hard...they bounced back on to the platform and he was knocked out cold," the witness told The Daily Telegraph.



"When they landed back on the platform I saw his eyes roll back into his head...I thought they were goners for sure."



Paramedics administered first aid to both men at the scene briefly before rushing the unconscious man to Liverpool Hospital with serious head injuries.



Police arrested the second man who is assisting with inquiries at Cabramatta Police Station.



All citybound trains have been terminated while police examine the crime scene.

Originally published as Boy left unconscious after train injury