Terrified shoppers have told of the moment chaos erupted at a Sydney Westfield shopping centre after two teenagers were stabbed in a violent brawl.
Emergency services were called to the Mount Druitt shopping centre about 5.15pm on Tuesday upon reports of an assault.
Shoppers told police a group of young men, believed to be known to each other, had begun brawling outside the centre.
Then, it is believed two people were stabbed with a knife.
NSW Ambulance paramedics treated one man, aged in his 20s, for several stab wounds to his upper body.
He was then taken to hospital in a critical condition.
A second man, believed to be aged in his late teens, was treated for a slash wound on his hand and face.
He was transported to hospital in a stable condition.

Emergency services rushed to a Mount Druitt shopping centre on Tuesday evening following reports of a brawl

Police have opened an investigation into the fight which ended in the stabbing of two young men
One 20-year-old man was treated for minor injuries at the scene and did not need further care.
‘Officers attached to Mount Druitt Police Area Command established a crime scene and have commenced an investigation in relation to the incident,’ a NSW Police spokeswoman told Daily Mail Australia.
Witnesses reported seeing one man stabbing another in the chest before a third attempted to intervene, earning himself a stab to his hand.
Prior to the stabbing, locals said a larger group of teens had been fighting.
‘We (saw) it, two teens were getting chased and bashed by a group of guys with weapons, they had balaclavas on,’ one wrote on a online community group.
Then, it is believed, the knife-wielding attacker appeared and began stabbing at one of the teens.
More to follow.