An earthquake measuring 5.2 on the Richter scale jolted 44km NE of Luganville, Vanuatu at 02:49: 44 Hong Kong Time on Wednesday (18:49:44 GMT on Tuesday), the U.S. Geological Survey said. The epicenter, with a depth of 135.0 km, was initially determined to be at 15.2692 degrees south latitude and 167.4785 degrees east longitude.