PARTS of Morobe and West New Britain provinces were shaken by two minor earthquakes on Sunday night.
Assistant director of the Geohazards division of the Mining Department, Chris McKee, said yesterday that the first tremor was felt 17 minutes before midnight.
The quake, measuring 5.3 on the Ritcher scale, was triggered off the western tip of West New Britain, at a depth of about 174km.
The second was felt at 3.51am yesterday and was measured at 5.4. It was located northeast of Lae, in the waters of Vitiaz Strait, at a depth of 70km.
Mr McKee said both were minor earthquakes, triggered by tectonic plate movements.
Both quakes occured at collision zones of the South Bismarck and the Solomon plates.