Earthquake of 7.5 magnitude strikes
The quake hit early on Monday morning in a central region of the country's main island of New Guinea at a depth of 35 kilometres.
About a half an hour later a second earthquake with a magnitude of 5.5 in the same area with a depth of 39 kilometres.
There were no immediate reports of damage.
The Joint Australian Tsunami Warning Centre showed that there was no threat of a tsunami for Australia.
Papua New Guinea sits on the Pacific Ring of Fire, an area known for seismic upheavals and volcanic eruptions.
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