A 7.0-magnitude quake was recorded early on Thursday in Papua New Guinea's New Britain region, the U.S. Geological Survey reported.
The quake struck at 02:01 Moscow time (22:01 Wednesday GMT). Its epicenter was located at the depth of 54 km (33.6 miles), some 565 km (350 miles) northeast of the country's capital Port Moresby, RIA Novosti reported.
There were no immediate reports of damage or casualties. No tsunami alert was issued.