The unidentified man had also tried unsuccessfully to stab other people, police said, in an incident that brought the central business district in Australia's largest city to a standstill in the early afternoon.
We heard a massive commotion outside and I looked outside and I could hear a man chanting.
He was screaming "shoot me in the head" and that he wanted to die.
As Leon was deciding what to do next, the alleged stabber jumped on the bonnet of his Mercedes.
Police Superintendent Gavin Wood said those who held down the suspect were "heroes".
The man is seen jumping on a vehicle in the middle of an intersection while members of the public grabbed chairs from a nearby cafe.
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The 33-year-old was rushed to a hospital in Abidjan with a fractured skull where he later died. According to BBC Afrique, he was a highly celebrated and accomplished Coupe Decale Artist.
The alleged knifeman was stopped by members of the public.
The attacker is now in police custody following the courageous actions of those who were present at the scene and were able to ... restrain him.
The young man is stopped in his tracks with a chair and a milk crate.
He along with his brother Paul and Lee Cuthbert, all from Manchester, were working in the area.
"We all kind of chased, worked together, but it was Luke who was the real hero".
Footage shows a woman entering The Rocks Police station with her hand heavily strapped. At first, a citizen approaches him with a chair.
David Vaux was coming back from a quiet lunch break and the scene become so dramatic he thought a crime television show was being filmed.
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Wulf sang with Domingo at the Washington National Opera, where he was the artistic director until 2011. I believed that all of my interactions and relationships were always welcomed and consensual.
"I saw people running so I ran towards him with a few other guys.He ran all the way back to near my work where a lot of others had cornered him for the police!"
"They were armed with crowbars and one man had an axe and another man, I think had a firefighting implement", David said. "Then, I quickly accelerated so he could get off the vehicle ..."
"The attacker is now in police custody following the courageous actions of those who were present at the scene and were able to. restrain him", he said. He didn't seem sound of mind at all. And I must acknowledge that those people who got involved were fearless.
The situation began just after lunchtime when a man was seen on the streets of the CBD after allegedly stabbing a woman.
"Members of the public detains the man before police attended and arrested him".
"There are no other injuries at this stage I can confirm".
Wood said it had been reported to him that the man had yelled "Allahu Akbar"; he said this had not been captured as part of the "evidentiary base" but would form part of the investigation.
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