A 5.2-magnitude earthquake struck Papua New Guinea Sunday, the US Geological Survey said, but there were no immediate reports of casualties or damage. The epicentre of the quake, which struck at 9:57 pm (1657 PST), was located 101 kilometres (63 miles) southeast of Rabaul, New Britain, at a depth of 66 km, the USGS said. The Pacific Tsunami Warning Centre in Hawaii did not issue any type of alert following the earthquake.