Cyclone Pam has slammed into the south Pacific archipelago of Vanuatu leaving "complete devastation" in its wake, aid agencies say.
Tom Skirrow, of Save the Children, said houses in the capital Port Vila were destroyed and "people are wandering the streets looking for help".
The UN agencies say dozens may have been killed and the disaster could be one of the worst in Pacific history.
Pam has brought winds of up to 270km/h (170mph) and torrential rain.
'Entire villages destroyed'
Chloe Morrison, an emergency communications officer with World Vision who is in Port Vila, said on Saturday that streets were littered with roofing, uprooted trees and toppled power lines.