The three men who died in a boating accident in Auckland's Manukau Harbour on Saturday have been identified.
They were Niveth Boutsady, 70, Mongkhon Wongmongkhon, 61, and Udom Roopsom, 54.
The sole survivor, a 23-year-old who has not yet been named, has been discharged from hospital, a police spokesperson said on Tuesday.
The man has provided information that will be used to assist the police with their investigation, the spokesperson said.
"Police are supporting their families during this distressing time."
An investigation into how the accident occurred is in its early stages, the spokesperson said. The matter will be referred to the Coroner.
"We are working with Transport Accident Investigation Commission (TAIC) and Maritime NZ to understand the factors that caused this accident."
Emergency services were notified at around 4:40pm on Saturday, October 16 after a boat with four people on-board overturned near the Manukau Heads bar.
On Sunday, Harald Hendel, the chief investigator of accidents, urged any witnesses to come forward.
"The circumstances reported were that the boat capsized," Hendel said.
"We don't yet know what happened next, but we have heard that other boaties found three deceased persons in the water and, fortunately, rescued a fourth.
"Getting the facts straight is vital, so we're keen to hear as soon as possible from people who saw the accident or observed the boat at any time in its journey."
The TAIC has appointed a dedicated team to lead the inquiry, which is securing electronic records - including photos, videos, and location data on people's cell phones - interviewing witnesses, and seeking any wreckage.
"The team's evidence collection work is broad at first to support the many routes that an investigation could follow. The initial focus is on gathering evidence that could disappear or change - not just flotsam and jetsam, but also memories while they're fresh in people's minds," Hendel said on Sunday.
"We're interested in what people have to say, of course, particularly the survivor, but also what the families and friends of the crew knew about their plans for the trip."
