Australian Prime Minister Scott Morrison has made an emotional tribute to those affected by the White Island eruption and thanked his "NZ cousins" for their assistance.
The volcano erupted at 2:11pm on Monday, sending debris thousands of metres in the sky and covering the island in ash. Five people have been confirmed dead, with 18 injured, ranging from minor to critical.
A large group of people were unable to be rescued from the island, and on Tuesday police said their aerial searches had picked up no signs of life.
Those killed in the disaster are of several different nationalities, but none have been confirmed at this point.
Twenty-four Australians were on the island at the time of the eruption. Some have been hospitalised while others are unaccounted for.
On Tuesday morning, Prime Minister Morrison said he had spoken to New Zealand Prime Minister Jacinda Ardern several times, but there was still a lack of solid information.
"There is still no comprehensive or confirmed information about the well-being of those who were impacted by the volcano eruption on Whakaari/White Island earlier today, including 24 Australians who were visiting the island as part of a cruise ship tour group."
He says that people must be patient while information is gathered and said that the Australian embassy was working with New Zealand authorities as well as the Royal Carribean Cruise Line company.
"We hope to know more in the morning, however, we must prepare for some difficult news in the days head. Jenny and I extend our love to all the individuals and families affected. This is a terrible and anxious time for them," Morrison said.
"Thank you to all those who put themselves at risk today to protect and save others, and those now caring for the injured. I also thank our NZ cousins for their cooperation and assistance. This is a very difficult time for them and we extend our deepest sympathies.
"So Kia kaha to us all on both sides of the Tasman."
At first light on Tuesday, the NZDF will approach the perimeter of the island to deploy drones and observational equipment. The Police Disaster Identification (DVI) team is also assembling in Whakatane to await deployment.
No rescue or recovery mission has been launched on the island itself due to advice from GeoNet suggesting it is unstable.
People wanting to submit information about friends or family who were visiting White Island can ring 105. People from overseas can call +64 9105 105.
