'Unbelievable Destruction' Reported After Cyclone Slams Vanuatu

At least 8 people have died, authorities say.

At least eight people have died, according to the Vanuatu National Disaster Management Office, the director of UNICEF Australia, Tim O'Connor, told ABC News.

The storm uprooted trees, blew roofs from homes and downed power lines across Port Vila. Chloe Morrison, a World Vision emergency communications officer who is in Port Vila, said there is no power or running water in the capital and that communication remains unreliable.

"It's still really quite dangerous outside. Most people are still hunkering down," she said. "The damage is quite extensive in Port Vila but there are so many more vulnerable islands. I can't even imagine what it's like in those vulnerable communities."

Ban said he had met the president of Vanuatu, Baldwin Lonsdale, who is attending the conference, and expressed the U.N.'s condolences and solidarity. The U.N. said it was preparing to deploy emergency rapid response units.

The Associated Press contributed to this report.