The quake, at a depth of 33km (20 miles), was centred 161km (100 miles) east of Kira Kira in the Solomon Islands.
The Solomon Islands, a nation of hundreds of islands in the South Pacific, has many World War Two-era sites.
The earthquake, which struck at 3.26am (GMT), was reviewed to a magnitude 6.2 and a revised depth of 10.6km (6.5miles).
The National Weather Service has not issued a tsunami warning, advisory, watch or threat as a result of the quake.
More to follow…