One person has died after a bus rolled in Tongariro National Park yesterday.
The accident happened half way up Ohakune Mountain Road, which runs to the Tūroa ski field at around 2.30pm yesterday.
One of the 31 people on board the bus died late last night.
No other details about the person are available until formal identification has taken place.
The chief executive of the bus company involved in the fatal crash said they'll be offering support to the family of the person who died.
Ross Copland said the company is cooperating with the police investigation.
And he has expressed condolences to the family of the victim.
"I've actually spoken with the family this morning and it's just such a tough thing for them to go through.
"We have the absolutely utmost respect for the process but we also want to make sure that our equipment's in great shape and that we can offer a safe service going forward as well."
Mr Copland said the bus driver is being treated at Whanganui Hospital for injuries, but hasn't yet been able to talk about what happened.
Rescue helicopters took three passengers to Waikato Hospital with serious injuries.
A 20-year-old man, and two women, aged 29 and 31, remain in a stable condition at Waikato Hospital.
Others were taken to Ōhakune for assessment.
Police are investigating the crash and are asking for witnesses to come forward with any information.
Meanwhile, the ski field operator says it wants to review the safety of its bus fleet before it reopens Turoa again on Monday.