The Australian island of Lord Howe Island is on tsunami watch following a massive undersea earthquake in the Pacific.
The warning was triggered by a magnitude 7.7 tremor that struck southeast of Loyalty Islands in New Caledonia on Friday.
Geoscience Australia said the quake hit at a depth of 31km.
The Bureau of Meteorology's tsunami warning centre said there was a potential threat to Lord Howe Island, 700km southeast of Brisbane, but at this stage, no waves had been observed that might threaten the Australian mainland.
There were also warnings of a possible tsunami for New Caledonia, Fiji, Vanuatu and New Zealand.