A 6.6-magnitude earthquake has struck off Papua New Guinea, the US Geological Survey says, but no tsunami warning has been issued.
The quake hit the remote New Ireland region at 6.04am (AEST) on Sunday at a depth of 66 kilometres, 124 kilometres from Rabaul, New Britain, and 843 kilometres from the capital Port Moresby.
Strong earthquakes are common in impoverished PNG, which sits on the so-called "Pacific Ring of Fire", a hotspot for seismic activity due to friction between tectonic plates.
A giant tsunami in 1998 killed more than 2000 people near Aitape, on the country's northwest coast.
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