Up to 19 people were injured, four critically, when the white SUV was driven at crowds outside Flinders Street station in Melbourne in what officers called a “deliberate act.”
The footage shows police pin the man to the floor as they pull his arms behind his back and put him in handcuffs. He was wearing a white shirt and blue trousers.
Police said another man has also been arrested.
Commander Russell Barrett told media that while the motive of the incident was not immediately clear, “at this stage we believe it was a deliberate act.”
Melbourne car crash
Asked if police had ruled out terrorism as motivation, Mr Barrett said only: “At this stage it’s early days in the investigation and the motivation is unknown.”
He confirmed 14 people had been injured in the attack.
Several were taken to hospitals, and two were in critical condition, including a pre-school aged boy with head injuries.