Mexico City and the surrounding area have been struck by an earthquake that caused a big scare but no immediate reports of significant damage or of any victims.
The 6.4 tremor is the latest in a series of quakes to hit the Pacific coastline in Central and South America.
The epicentre was just inland, near the town of Tecpan in Guerrero state, about 300 kilometres south of Mexico City.
The resort of Acapulco experienced mild shaking.
“(It was) very strong, very strong. This has happened twice to us here,” said Valentina Mejia in Mexico City, referring to a previous tremor on April 18. “The tremor was very strong, but we are calm.”
The woman was one of many workers told to leave her office as buildings in Mexico City were evacuated.
The quake was less powerful than last month’s 7.2-strong tremor – and much weaker than the 1985 earthquake that measured 8.1 and killed several thousand people in Mexico City.