A man has been arrested in Sydney's CBD after stabbing a woman to death in the central business district of the city.
Another woman has been taken to hospital, but is said to be 'stable.
Witnesses say the 21-year old victim was stabbed in the back and died at the scene.
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Footage captured shows the man jumping on top of a car and shouting 'shoot me, shoot me in the head', as brave bystanders use a crate and chairs to pin him down before he can be arrested by police.
Police released a statement, saying: "Police and NSW Ambulance paramedics located a woman inside a hotel, who had a stab wound. She has been taken to hospital in a stable condition.
"A short time later, members of the public detained the man before police attended and arrested him."
People watching the shocking incident unfold at around 2pm in the middle of a busy part of central Sydney.
Jack was at the scene as it unfolded and he wrote on Twitter: "So insane! A random dude just started stabbing people in the city right outside where we were having lunch.
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"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!
"Everyone I was with are safe and thanks to police, fire fighters and the general public (one I know was ex military) old mate was caught! No idea how many people were hurt, hopefully no one too bad!"
Video footage captured by Channel 7 shows the moment the bloke was detained and other footage has captured him being lead away in handcuffs.
Police added: "It is believed there is no further threat to public safety. A number of crime scenes have been established and a number of road closures are in place, which is believed to have significant impact on traffic and public transport this afternoon."
Featured Image Credit: Channel 7