A strong 6.9-magnitude earthquake hit off the Loyalty Islands in the French Pacific territory of New Caledonia on Saturday but there was no tsunami alert, seismologists said.
The quake struck 261 kilometres (162 miles) east- southeast of the town of Tadine on the island of Mare at 11:19 pm local time (1749 IST) at a relatively shallow depth of 15 kilometres, the US Geological Survey said.
Geoscience Australia gave it an initial magnitude of 6.7 at a depth of 46 kilometres and estimated that it was unlikely to have caused damage.
There was no threat of a widespread destructive tsunami from the tremour, which hit about 400 kilometres east of the New Caledonian capital Noumea, the Hawaii-based Pacific Tsunami Warning Center said.
"However earthquakes of this size sometimes generate local tsunamis that can be destructive along coasts located within a hundred kilometres of the earthquake epicentre," it said.
There were no immediate reports of damage or casualties from the sparsely populated and remote Loyalty Islands.
New Caledonia lies on the so-called 'Pacific Ring of Fire', a zone of frequent seismic activity caused by friction between shifting tectonic plates.