An earthquake of 7 magnitude struck off Papua New Guinea (PNG) on Monday, the US Geological Survey (USGS) said, but there were no immediate reports of any casualties or damage.
The quake, the latest in a series in the region over recent days, struck 180 km west of the town of Rabaul, on New Britain island, at a shallow depth of 10 km, the USGS said.
There was no immediate tsunami warning.Earlier, a 6.4-magnitude earthquake struck off eastern Indonesia in the early hours of Monday, triggering a brief tsunami alert that was swiftly lifted, according to seismic monitoring organisations.
The quake struck deep at some 171 kilometres (106 miles) below the surface of the earth in the Banda Sea, the United States Geological Survey (USGS) said.
A tsunami alert was initially triggered by the Indian Ocean Tsunami Warning and Mitigation System (IOTWMS).
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