The earthquake's epicenter, about 36 miles below the surface, was about 40 miles west-southwest of Panguna, Papua New Guinea, and about 398 miles west-northwest of Honiara, Solomon Islands.
The Joint Australian Tsunami Warning Center said the earthquake didn't pose a tsunami threat to the Australian mainland or territories, the Sydney Morning Herald reported.
AccuWeather.com said there were no reports of deaths or damages.
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