Police are striving to identify four men over a sickening assault in Brisbane that has left a teenager fighting for his life.
The 18-year-old man suffered life-threatening head injuries after being assaulted in the Chinatown Mall in Duncan Street at 3.35am (AEST).
He is in the intensive care unit at the Royal Brisbane and Women's Hospital in a critical condition.
Detective Acting Inspector Tom Armitt said the young man was walking through the mall with a friend when they were approached by four men of Pacific Islander appearance, believed to be in their 20s.
"A short exchange has occurred and the victim was struck once to the back of the head (and) has fallen forward," he said.
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"This is a random act of violence - there is no indication that the victim knew who the offenders were."
He appealed for any witnesses to the brutal attack to come forward and assist police with their enquiries.
It's understood the bloodied teen was found unconscious by two NightWatch chaplains, who rendered first aid before paramedics arrived on scene.
The teen's assault came about an hour after a 24-year-old man was also punched in the face while sitting in a Brunswick Street nightclub.
The force of the blow broke a ceramic mug the offender had in his fist, leaving the victim's face and eye lacerated.
Police are still trying to determine if the men knew each other.
Investigations are continuing.
