Cyclone Gita hits Tonga: Nuku'alofa faces major damage

Tropical Cyclone Gita has wreaked havoc in Tonga overnight. Winds of over 233km/h ripped roofs off houses, brought down trees, destroyed a Catholic church, and took the Tongan Met Office and the national radio station off line. RNZ Pacific's Sally Round has been monitoring events through the night. She joins Guyon Espiner with the latest details.