By Olivia Caldwell of 
Queenstown Police want the public's help with their enquiries into the last movements of Hong Kong tourist Wai Ming Lai. Photo: NZ Police
A Hong Kong tourist found in trouble on an Arrowtown walking track over Labour Weekend is suspected to have died of hypothermia, police say.
Wai Ming Lai, 51, died on Arrowtown's Sawpit Gully track just after 8am on 22 October after walkers found him unconscious on the ground. Attempts were made to resuscitate him.
Police are still seeking information about his movements the night before and the whereabouts of a large silver suitcase used by the tourist.
They believe he arrived in Queenstown on 18 or 19 October and paid for his accommodation in cash.
Detective Senior Sergeant Malcolm Ingliss said an autopsy found hypothermia was the likely cause of Lai's death.
He did not know if Lai had been on the track overnight and could not say whether he was unprepared for the conditions.
Lai was found with a backpack and sufficient clothing for day walking, but not an overnight camp, Ingliss said.
"Anything anyone can tell us about where Lai may have been leading up to his death is valuable."
Police made contact with Lai's family on Friday, but had been unable to locate his belongings or find out where he had been staying before his death.
Lai, who arrived in New Zealand from Hong Kong in July, had spent the last week in Wānaka and a week earlier at a backpackers in Queenstown.
"We know he was travelling with a large silver suitcase, and he was using buses in Wānaka," he said.
The only identifying item Lai had with him when he was found was his passport, which had expired.
* This story originally appeared on Stuff.
