Magnitude 6.6 quake hits off Papua New Guinea coast - USGS
The strong quake was centred 81 miles (130 km) east-southeast of Rabaul, New Britain, at a depth of 43.5 miles (70 km), the USGS said.
The quake was not expected to generate a tsunami, according to the Pacific Tsunami Warning Centre.
(Editing by Peter Cooney)