The quake struck 6 miles (9 km), northwest of the town of Rabaul, on the northeast tip of New Britain island, it said.
Singapore - A magnitude 6.3 earthquake struck off the Papua New Guinea island of New Britain on Monday, the US Geological Survey (USGS) said.
The quake struck 6 miles (9 km), northwest of the town of Rabaul, on the northeast tip of New Britain island, it said. There were no immediate reports of any damage or casualties.