Strong 6.8 magnitude earthquake off Chile coast: USGS

A 6.8 magnitude earthquake struck in the Pacific off the coast of Chile on Sunday, the United States Geological Survey (USGS) said."There is a low likelihood of casualties and damage," the USGS said of the earthquake, which it earlier reported as a magnitude 7.2, and which occurred 41 miles (66 kilometers) west-southwest of Constitucion, Chile.Chile's National Seismological Center (CSN) put the quake at 6.6 magnitude.