Terror attack in Australia
Officers were initially called to reports of a car fire near Bourke Street, a busy thoroughfare, at about 16:20 local time (05:20 GMT), just before the evening rush hour.
Police later discovered that the vehicle was packed with "barbecue-style" gas cylinders. Footage circulating on social media shows the vehicle crashed into shop fronts, engulfed by flames.
However, the cylinders did not explode, police said.
"As they got out of the car, they were confronted by a male brandishing a knife and threatening them," Supt David Clayton said at a news conference.https://www.bbc.com/news/world-australia-46147581