A man has turned himself in after ACT Police released this video of a one-punch attack in Canberra on New Year's Eve.
The CCTV footage appears to show the victim in a tense conversation, when another man steps up and punches him on the side of the head, knocking him to the ground.
Alcohol-fuelled violence is a huge issue in Australia at the moment. Earlier this week, 18-year-old water polo player Cole Miller was killed by a one-punch attack in Brisbane.
ACT Police are urging anyone who may have witnessed the incident to contact Crime Stoppers on 1800 333 000, or via the ACT Crime Stoppers website.