A man has been arrested after setting a vehicle on fire and stabbing three people - one fatally - in central Melbourne, Australia.
Police have shot a knife-wielding man after three people were stabbed in Melbourne's Bourke Street.
Police have since confirmed the man was shot in the chest and is in a critical condition.
One witness said a man was stabbed in the face.
Paramedics said they assessed three people at the scene, one with a neck injury: "They are in a suspected critical condition".
A second person suffered a head injury and has been taken to hospital. Their genders, ages, and condition are not known. "A third person has also been taken to hospital".
'The exact circumstances are yet to be determined at this stage.
Victoria Police have advised people to stay out of the area while the situation remains on-going.
The officers ultimately fired a shot, causing the man to fall down. Large spots of what appears to be blood are near the body alongside a pair of men's black lace-up shoes.
Police officers at the scene on Bourke Street in Melbourne after a man attacked others with a knife.
Witness Fiona told 3AW her friends had seen someone with a knife in the area and she'd been told he'd stabbed a security guard.
Another said they heard "what sounded like a bomb and gun shot".
'Police response was swift and overwhelming.
About 6pm, Victoria Police Superintendent David Clayton holds a press conference just metres from where the incident unfolded.
"He seemed to be waving something, people around me screamed that he had a knife, but I couldn't see clearly from where I was", she said. I heard at least one gunshot initially, ' one said.
The incident comes as a trial continues into the horrifying rampage in Bourke St in January a year ago.