An earthquake of magnitude 5.6 on the Richter scale struck off the coast of the Polynesian kingdom of Tonga in the southern part of the Pacific Ocean, the US Geological Survey (USGS) said. No casualties have been reported.
The quake was registered on Saturday at 11:24 GMT about 91 miles to the northwest from Nuku'alofa town at the depth of 160 miles.
USGS noted the "green level" of the threat of the quake consequences, indicating a low probability of casualties and economic damage.