A series of strong earthquakes have struck off the Solomon Islands in rapid succession on Sunday, but no damage was reported and no tsunami warnings were issued.
The US Geological Survey says the strongest of the tremors hit at 5:58 am local time, measuring 6.1 and located 68 kilometres southwest of Lata in the Solomon Islands.
It was the fifth time in four days that an earthquake with a magnitude of over 6.0 has struck in the region.
Earlier, a magnitude 4.8 quake was recorded 180 kilometres south east of Pagan in the Northern Marianas in the western Pacific.
There were no tsunami warnings and no immediate reports of damage or casualties.
On Saturday, Australian seismologists recorded a quake measuring 6.6 and centred out to sea, about 70 kilometres southwest of Lata in the Santa Cruz islands.
The quake off the coast of the Solomon Islands was followed by a series of smaller aftershocks.
The Solomon Islands are part of the "Ring of Fire", a zone of tectonic activity around the Pacific Ocean that is subject to earthquakes and volcanic eruptions.
In 2007, a tsunami following an 8.1-magnitude earthquake killed at least 52 people in the Solomons and left thousands homeless.