NEW YORK, June 23 (Xinhua) -- An earthquake with a magnitude of 5.4 jolted 31 km NNW of Asan-Maina Village, Guam at 19:14:26 GMT on Monday, the U.S. Geological Survey said.

The epicenter, with a depth of 146.0 km, was initially determined to be at 13.75 degrees north latitude and 144.66 degrees east longitude. ■