A sixth person has been confirmed dead after a volcano erupted on New Zealand's White Island.
It comes as the country's Prime Minister Jacinda Ardern said "bigger questions" will have to be answered after tourists were allowed on the island where the country's most active volcano is found.
The volcano erupted on Monday as dozens of people were exploring the island, which is located off North Island in the Bay of Plenty.
Police said on Tuesday morning that a sixth person succumbed to their injuries in hospital. At least eight others are still missing and feared dead.
"We know, too, there will be bigger questions in relation to this event. These questions must be asked and they must be answered," she said.
"But our focus now is on discharging our duty of care to support those affected and that is also the focus of the police."
Matthew Evans, 38, who is originally from Carmarthen in Wales and was one of the Britons listed as missing on a Red Cross website, is safe and well.
His brother Ian Evans said: “He was travelling with his new wife, he was trekking at the time and we were concerned because we hadn’t heard from him for 24 hours.
“But they are safe. They were in the North Island, away from the Bay of Plenty.
“They said they had no idea what had gone on."
Police confirmed that officers are investigating the incident on behalf of the coroner.
The probe will run parallel to an inquiry by WorkSafe New Zealand. It was earlier suggested there would be a criminal probe, but officers later said it was too early to confirm this.
Meanwhile, GNS Science, New Zealand's geoscience agency, warned there was a 50/50 chance of another eruption in the coming 24 hours, as the volcano vent continued to emit "steam and mud jetting".
A body recovery operation will begin as soon as the island is stable.
New Zealand police said in a statement: "This will involve the deployment of drones carrying specialist measuring equipment in order to collect and analyse gas levels.
"This data and information will inform the next steps we are able to take."
The UK High Commissioner to New Zealand, Laura Clarke, confirmed that two of the 31 people still in hospital are from Britain. It was not clear if more British tourists had been affected.
"We are supporting the family of two British women who have been hospitalised in New Zealand," Ms Clarke tweeted.
It is believed most of the 47 people on the island at the time of the eruption were from Australia.
Australian Prime Minister Scott Morrison said 11 Australians were unaccounted for, with 13 in hospital. Three Australians were suspected to be among the initial five confirmed dead, he told reporters in Sydney.
