A 5.8 magnitude earthquake shook southwestern Mexico on Sunday evening but there were no initial reports of damage or injuries.
The U.S. Geological Survey said the quake struck at a depth of about six miles. The epicenter was below the Pacific Ocean about 20 miles southwest of the town of Santiago Pinotepa Nacional and 80 miles west of Puerto Escondido in Oaxaca state, the USGS said.
Initial reports put the quake at 6.3 magnitude, but it was downgraded.
USGS Geophysicist Shengzao Chen said that no reports of injuries or damage had been received.
"But we cannot rule out the possibility of structural damage for this quake," he added.