No casualties or damages reported yet from earthquake measuring 6.9 on scale (representational)
A magnitude 6.9 earthquake struck off the southern coast of Papua New Guinea's New Britain island on Friday, triggering a tsunami warning for surrounding coastlines.
There were no immediate reports of casualties or damage from the shallow quake close to the coast, around 100 miles (162 km) southwest of Rabaul.
The Pacific Tsunami Warning Centre (PTWC) issued a threat warning for the country's coastline located within 300 km of the quake's epicentre.
"Government agencies responsible for threatened coastal areas should take action to inform and instruct any coastal populations at risk," the PTWC said in its alert. "Persons located in threatened coastal areas should stay alert for information."
Australian authorities said there was no threat to the Australian coastline from the quake, which was initially reported as a magnitude 7.2.
Papua New Guinea, one of the world's poorest countries, is still reeling a month after a magnitude 7.5 quake its rugged and remote highlands, killing at least 100 people as landslides buried villages.
(Reporting by Jane Wardell and Alison Bevege in SYDNEY. Additional reporting Sandra Maler in Washington; Editing by James Dalgleish and Tom Brown) © Thomson Reuters 2018
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