A powerful earthquake has struck off the South Pacific nation of Papua New Guinea.
There were no immediate reports of injuries or damage, but a tsunami warning has been put into effect.
The US Geological Survey said the magnitude-7.5 earthquake was located 47 miles south west of the town of Panguna on Bougainville Island. It struck at a depth of 19 miles.
The Pacific Tsunami Warning Centre issued a warning for Papua New Guinea and the Solomon Islands, but said it was not known whether a tsunami had been generated.
Earthquakes are common in Papua New Guinea. The country lies on the Ring of Fire - an arc of earthquake and volcanic activity that stretches around the Pacific Rim.