Prime Minister Chris Hipkins said three more fatalities had been confirmed since Thursday and <a href="https://www.foxnews.com/category/us/crime/police-and-law-enforcement" target="_blank">police held</a> "grave fears" for other missing persons.

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"Police report that there are 4,549 persons reported as uncontactable. A team of 80 people are working now to narrow down this list as quickly as possible and to prioritize contact with those who are most likely to be missing," Hipkins told reporters.

Hipkins said he didn't know how far the death toll would climb.

<div class="m"><picture><source media="(max-width: 767px)" srcset="https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/343/192/New-zealand-prime-minister.jpg?ve=1&amp;tl=1, https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/686/384/New-zealand-prime-minister.jpg?ve=1&amp;tl=1 2x"><source media="(min-width: 767px) and (max-width: 1023px)" srcset="https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/672/378/New-zealand-prime-minister.jpg?ve=1&amp;tl=1, https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/1344/756/New-zealand-prime-minister.jpg?ve=1&amp;tl=1 2x"><source media="(min-width: 1024px) and (max-width: 1279px)" srcset="https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/931/523/New-zealand-prime-minister.jpg?ve=1&amp;tl=1, https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/1862/1046/New-zealand-prime-minister.jpg?ve=1&amp;tl=1 2x"><source media="(min-width: 1280px)" srcset="https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/720/405/New-zealand-prime-minister.jpg?ve=1&amp;tl=1, https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/1440/810/New-zealand-prime-minister.jpg?ve=1&amp;tl=1 2x"> <img src="https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2023/02/640/320/New-zealand-prime-minister.jpg?ve=1&amp;tl=1" alt="New Zealand's prime minister, left, and Hawke's Bay Civil Defence and Emergency Management Group Controller Ian McDonald access damages from cyclone Gabrielle to the Esk Valley in New Zealand on Feb. 17, 2023.&nbsp;" width="100%" height="auto"></picture></div> <div class="info"><div class="caption"><p><span>New Zealand's prime minister, left, and Hawke's Bay Civil Defence and Emergency Management Group Controller Ian McDonald access damages from cyclone Gabrielle to the Esk Valley in New Zealand on Feb. 17, 2023.&nbsp;</span> <span>(Mark Mitchell/New Zealand Herald via AP)</span></p></div></div>

"The thing is we don’t know. We’re not talking huge numbers," he said. "It’s not like I’m aware that there are lots and lots and lots out there that we’re not reporting. We’re still picking up one or two (fatalities) at a time," he added.

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Hipkins also said police hadn't specified to him how many people were considered to be of serious concern, but "there are several people that they are very concerned about."

A team of <a href="https://www.foxnews.com/category/world/world-regions/australia" target="_blank">25 Australian disaster response experts</a> arrived Friday in New Zealand to help local authorities.

The North Island east coast around New Zealand’s most populous city, Auckland, has been hardest hit and several communities remained isolated on Friday.

Auckland was swamped two weeks ago by a record-breaking storm that killed four people.

Eight deaths have been recorded following a cyclone in New Zealand. Over 4,500 people are still unaccounted for four days after the disaster.