A 7.1-magnitude quake jolted Papua New Guinea on Friday, the US Geological Survey (USGS) said.
The epicentre at a depth of 61 km was initially determined to be at 5.2 degrees south latitude and 151.7 degrees east longitude, Xinhua news agency reported.
The Pacific Tsunami Warning Centre hasn't issued any warning yet.
There has been no report of casualties or property loss so far.
