6.9 magnitude earthquake strikes southern Mexico

(CNN) — A 6.9 magnitude earthquake struck Monday morning in southern Mexico’s Chiapas state near the border with Guatemala, the U.S. Geological Survey said.

The quake happened at 6:23 a.m. (7:23 a.m. ET), about 1 mile from Puerto Madero, Mexico, which is situated on the country’s Pacific coast.

Strong shaking was felt in southern Chiapas state and western Guatemala, according to the USGS. The epicenter was about 127 miles west of Guatemala’s capital, Guatemala City.

Details about damage weren’t immediately available.

The depth of the quake was 37 miles, the USGS said. The USGS initially said the magnitude was 7.1.