BEIJING, Oct.14 (Xinhua) -- An earthquake measuring 5.4 on the Richter scale jolted 9km SSW of San Dionisio del Mar, Mexico at 00:20:58 GMT on Saturday, the U.S. Geological Survey said.

The epicenter, with a depth of 59.52 km, was initially determined to be at 16.256 degrees north latitude and 94.7783 degrees west longitude.