Police have shot a man dead at Sydney's Central train station following reports of an armed robbery.
Police have shot and killed a man in Sydney's bustling Central station after a suspected armed robbery went wrong.
Officers were called to the florist at the Eddy Avenue entrance to the city's main station following reports of an armed robbery at around 6:45pm on Wednesday evening.
The suspect, who witnesses say armed himself with scissors, confronted police before three to four shots rang out, graphic video shared on social media showed.
The man dropped to the floor and bystanders screamed.
Salim, who owns the kebab shop near the florist rushed out after he heard people screaming.
He said he saw the elderly florist, who he has worked alongside at the station for years, covered with blood.
"I heard a noise - three shots - but I only realised what it was after I heard someone screaming," he said.
Salim said he saw the suspected attacker lying on the ground surrounded by police as he rushed past to help his injured friend.
"I feel bad for (the florist)," he said.
"He's a great person."
The man shot by police, described only as "a male of Asian appearance", died at the scene.
No one else was injured and the man is yet to be identified.
Nathan Yin, 20, told News Corp he was entering the train station through the lower entrance of the north concourse when the stand-off with police started about 7pm.
Mr Yin said the Asian man in his "30s or 40s" pulled out the pair of scissors and screamed "I just want to die".
Police will conduct an internal investigation and independent review after the event.
A critical incident investigation team, headed up by the homicide squad, will look into all aspects of the shooting, including the discharge of police firearms, Acting Assistant Commissioner Mark Walton said.
"That investigation will be subject to an independent review in accordance with police policy and guidelines," he told reporters at a short press conference following the shooting.
That information will be handed to the coroner and police are appealing for witnesses.
The incident is not believed to be terrorism-related, police said.