HONG KONG, March 6 (Xinhua) -- An earthquake measuring 6.7 on the Richter scale jolted 111km SW of Porgera, Papua New Guinea at 14:13:08 GMT on Tuesday, the U.S. Geological Survey said.

The epicenter, with a depth of 33.0 km, was initially determined to be at 6.273 degrees south latitude and 142.597 degrees east longitude.