Photo: USGS

NEW YORK, July 19 (Xinhua) -- A 5.7-magnitude earthquake jolted 77 km S of Kokopo, Papua New Guinea at 23:02:08 GMT on Monday, the U.S. Geological Survey said.

The epicenter, with a depth of 30.7 km, was initially determined to be at 5.0304 degrees south latitude and 152.1383 degrees east longitude.