The extent of the devastation in Tonga is becoming clearer, with aerial photographs taken by the New Zealand Defence Force showing some of the utter devastation on islands.
The Tongan government has confirmed that all homes on the island of Mango were wiped out in the tsunami that followed Saturday's volcanic eruption.
Three deaths have also been confirmed, and more people are injured.
Yesterday, a distress signal was detected in an isolated, low-lying group of islands in Tonga.
Acting United Nations coordinator to the Pacific Jonathan Veitch talks to Max Towle.