ACT Policing have re-released CCTV footage of a man they believed committed a "coward punch" attack in Civic in November 2016.
Around 3am on Saturday November 26, 2016, a man at the taxi rank on London Circuit near Cube nightclub was approached by three other men, police say.
One of the men punched the man from behind, leaving him unconscious and requiring emergency surgery.
Police say the offender fled the scene and was caught in CCTV footage, which was originally released by police in December 2016.
Police believe the man is recognisable from the video, and are asking anyone who can confirm his name to speak to police. The information can be supplied anonymously through Crime Stoppers.
“If you know this man, you should contact police. Our efforts to locate and apprehend him will continue, and the investigation of an attack like this will not close until he is caught,” First Constable Jarrad Drennan said.
Police want anyone with information that could help identify the attacker to contact Crime Stoppers on 1800 333 000 or the Crime Stoppers website and quote reference 6039160.