Suva, Fiji--Relief supplies began arriving in cyclone-devastated Vanuatu Sunday as the Pacific nation declared a state of emergency amid reports entire villages were "blown away" when a monster storm swept through.
The official death toll in the capital Port Vila stood at six, although aid workers said this was likely just a fraction of the fatalities nationwide.
Communications were still down across most of the archipelago's 80 islands, although the airport in Port Vila reopened with limited facilities to allow much-needed aid in.
Two Australian air force planes landed with food, shelter and medicine while a New Zealand military aircraft also arrived loaded with eight tonnes of tarpaulins, water containers, chainsaw packs and generators.
Commercial flights were scheduled to resume on Monday.
The government said it was still trying to assess the scale of the disaster unleashed when Super Cyclone Pam, a maximum category five system, vented its fury on Friday night, with winds reaching 320 kilometres (200 miles) an hour.
The UN had unconfirmed reports that the cyclone had killed 44 people in one province alone and Oxfam said the destruction in Port Vila was massive, with 90 percent of homes damaged.
"This is likely to be one of the worst disasters ever seen in the Pacific, the scale of humanitarian need will be enormous... entire communities have been blown away," said Oxfam's Vanuatu director Colin Collet van Rooyen.
Vanuatu Red Cross president Hannington Alatoa said: "Effectively the whole country.. is flattened."
While the focus was on Vanuatu, Tuvalu -- some 1,550 kilometres (960 miles) to the northeast -- saw thousands forced from their homes.
The dire situation prompted Pope Francis to send a message of support.
"I express my solidarity to the people of Vanuatu... I pray for the dead, the injured and the homeless," said the pontiff.
Pictures from Port Vila showed streets littered with debris, cars crushed by trees, buildings blown to pieces and yachts washed inland.
- Areas off-limits -
Vanuatu police commissioner Colonel Job Esau said some areas of the capital -- such as shopping districts and the waterfront -- had been put off limits to try to stop looting as darkness approached -- including possible thefts from yachts that had been washed away.
Ivan Oswald, an Australian cafe owner who has lived in Vanuatu for 13 years, said he had seen "opportunistic looting" of houses and boats.
"It's a sad thing... I've seen some people running around and started looting. Resorts are being pilfered. It's just getting a bit lawless at the moment," he told AFP by phone.
Oswald's Port Vila harbour cafe was "smashed up" by the cyclone.
"People are behaving differently. Some are fixing things, some are unable to, they are just a little bit shell-shocked," he said.
Vanuatu's President Baldwin Lonsdale described the storm as "a monster that has devastated our country", his voice breaking as he described Port Vila's devastation.
AFP