Police would like to speak with anyone who may have been in the Antigua St and Burke St areas at the time of the crash, or who may have CCTV footage in the area.
The man was wearing a light-coloured jacket over a New Zealand Warriors top, blue jeans and sneakers.
Anyone with CCTV or dashcam footage in the area is asked to review their footage and contact police if they see anything that may assist with inquiries.
Information could be provided online at 105.police.govt.nz or anonymously through Crime Stoppers on 0800 555 111, using reference number 260621/1392.