Authorities would like to express their gratitude to the public for coming forwards and helping them identify the man.
Police released images of some items the man was found with - a ring with a skull design on his left hand and tan-brown boots.
Police said he was also wearing blue jeans and a light-brown tartan shirt.
Police said he was possibly Polynesian, was tall, young, of a heavy build and had medium-length black hair to below his ears.
“Anyone who has information that could assist the investigation is asked to please contact police by calling 105, or going online to 105.police.govt.nz using ‘Update Report’ and referencing 230318/8196,” police said.
“Alternatively, information can be provided anonymously to Crimestoppers on 0800 555 111.”