Detective senior sergeant Malcolm Inglis, of Queenstown, said Lai’s death had been referred to the coroner, but police needed the public’s help to get him home.
Lai was meant to have left NZ on October 18.
“We don’t know where he’s been staying, what he does, we don’t know, at this stage, who his next of kin are ... to advise them of his death.
"No one’s come forward to report him missing, or not returning to his accommodation."
Inglis appealed to the public for any information, particularly around where he had been staying.
While his cause of death was still to be determined, police’s priority is to get Lai back to his family.
Anyone who met Lai, accommodated him, or has any information at all is asked to contact police.