Violence erupted in Melbourne's CBD overnight, with a spate of bloody attacks across the city leaving one man dead and several others in hospital.
Emergency services were called to Bourke Street about 5:45am following reports of an assault.
Two men sustained stab wounds and were taken to hospital in a critical condition.
One of the men, who is yet to be formally identified, later died in hospital and Bourke Street remains closed.
The Bourke Street incident was the second stabbing attack of the night, following a brawl outside a nightclub at the intersection of Flinders Lane and King Street.
Two men were found with stabbing injuries following a confrontation about 1:25am.
A 19-year-old man and another unidentified man are fighting for their lives in hospital following the assault.
Trio attacked in promenade brawl
An assault in Melbourne's Southbank left a man with suspected life-threatening injuries and two other men with facial injuries.
Police have been told two groups of men appeared to argue as they were leaving a bar along Riverside Quay about 12:40am.
The argument allegedly spilled onto the promenade footpath, where three men were set upon by two other men.
A 25-year-old man from Springvale was struck heavily to the face before he fell and hit his head on the ground.
The two other men, aged 24 and 25-years from Keysborough and Cheltenham, received facial injuries.
The pair who police said appeared to be the aggressors fled the scene.
Anyone with information on any of the incidents is urged to contact Crime Stoppers on 1800 333 000.
