An earthquake measuring 4.7 magnitude on the Richter scale hit Papua New Guinea on Sunday. The earthquake occurred 186 km from Panguna town at a depth of 132.3 km, the US Geological Survey (USGS) reported. No casualties or material damage were reported due to the earthquake. Papua New Guinea is located in the so-called Ring of Fire, a region that extends along the coast of the Pacific Ocean and is characterized by high earthquake and volcanic activity. This region includes 90 percent of the world's active volcanoes. Source: Qatar News Agency