The epicentre of the natural disaster was located around 125 miles south-west of the town of Rabaul, at a depth of around 40km, according to the United States Geological Survey (USGS).
A magnitude 7.0 quake struck remote New Britain island in Papua New Guinea on Thursday, the United States Geological Survey said.
The Pacific Tsunami Warning Centre said waves less than 0.3m high could be expected on coastlines in Papua New Guinea and neighbouring Solomon Islands.
However, it added: "Recent earthquakes in this area have caused secondary hazard such as tsunamis, landslides and liquefaction that might have contributed to loses".
He was unable to comment on the tsunami threat.
Chris McKee from Papua New Guinea's Geohazards Management department in the capital, Port Moresby, said authorities were still trying to confirm reports of damage or if a tsunami was generated.
The magnitude 7.0 quake struck about 118km east of Kimbe, West New Britain.
The country is still recovering after a 7.5-magnitude quake hit its mountainous interior in February, killing at least 125 people, cutting off access to villages and knocking out power. Most of the world's earthquakes hit along the ring.
Indonesian authorities said at least three people were killed and four injured in the quake. But officials have warned that as many as 5,000 people may have died in the quake, which turned the ground in areas around the city of Palu into liquid via a process called liquefaction (as seen in the top video).