Sydney, Rabi'I 18, 1438, Dec 17, 2016, SPA -- A powerful earthquake struck off the coast of the Pacific island nation of Papua New Guinea on Saturday, and a tsunami threat was issued to areas near the epicenter. There were no immediate reports of injuries or damage. The magnitude-7.9 quake struck 46 kilometers (29 miles) east of Taron in Papua New Guinea, the U.S. Geological Survey said. The quake was deep, at 103 kilometers (61 miles). Deeper earthquakes tend to cause less damage than shallow ones, AP reported. The Pacific Tsunami Warning Center said there was a threat of a tsunami in Papua New Guinea and nearby areas. The quake rattled residents near the epicenter on the island of New Ireland, but was not felt in Papua New Guinea's capital, Port Moresby, said Mathew Moihoi, an official with the Geophysical Observatory. There were no immediate reports of damage, though officials were still assessing the situation, he said. Papua New Guinea sits on the Ring of Fire, the arc of seismic faults around the Pacific Ocean where earthquakes are common. --SPA 18:48 LOCAL TIME 15:48 GMT www.spa.gov.sa/w292477