A 7.0-magnitude quake struck Papua New Guinea's New Britain island Thursday, the United States Geological Survey said, triggering a tsunami warning.
"We felt the quake a bit, but it was not too strong,"Constable Roy Michael told Reuters by phone from Rabaul police station".
But it warned that "recent earthquakes in this area have caused secondary hazards such as tsunamis, landslides and liquefaction that might have contributed to losses".
He was unable to comment on the tsunami threat.
However, Australia's Tsunami Warning Centre stated there was no risk to its coastline.
The quake was initially recorded as magnitude 7.3, but was later downgraded to magnitude 7.
The initial shock was followed by two further tremors shortly afterwards, of magnitude 5 or greater.
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.
A spokesman for PNG's National Disaster Management Office in Port Moresby said there were no immediate reports of damage from the quake but these typically took several hours to reach the capital after a major shake.
Papua New Guinea, like Indonesia, is located on the Pacific "Ring of Fire", a seismically active region that encircles the Pacific Ocean.
Some tourists and residents ducked outdoors as a precaution but then went back to sleep when there was no tsunami warning.
Indonesia is still reeling from an quake and tsunami on the island of Sulawesi that killed more than 2,000 people. Officials say more than 80,000 people are living in temporary shelters or otherwise displaced.