An earthquake of magnitude 7.5 has struck Papua New Guinea, according to the US Geological Survey.
The quake had a depth of 35 kilometres, hitting at about 4am local time.
The quake struck in the heart of mainland PNG in Southern Highlands province.
There were no immediate reports of damage.
According to the Pacific Tsunami Warning Center, the quake did not present a regional tsunami threat.
About a half an hour later an earthquake with a magnitude of 5.5 struck in the same area with a depth of 39 kilometres.
PNG rests on the so‑called 'Ring of Fire', a known hotbed of seismic activity due to a tectonic plate that spans the Pacific.
Source: rnz.com
