BEIJING, Oct. 21 (Xinhua) -- An earthquake with a magnitude of 5.1 jolted 18 km NNE of San Isidro, Costa Rica at 1045 GMT on Saturday, the U.S. Geological Survey said.
The epicenter, with a depth of 10.0 km, was initially determined to be at 9.51 degrees north latitude and 83.61 degrees west longitude. ■
