NEW YORK, April 4 (Xinhua) -- An earthquake with a magnitude of 6.6 jolted 72 km S of Boca Chica, Panama, at 22:18:12 GMT on Tuesday, the U.S. Geological Survey said.

The epicenter, with a depth of 10.0 km, was initially determined to be at 7.575 degrees north latitude and 82.321 degrees west longitude.