Earthquake shakes Mexico City
A seemingly strong earthquake has shaken Mexico's capital.
There is no immediate word of damage or casualties and seismologists have not yet issued a calculation of its power or epicentre.
Mexico City is vulnerable even to distant earthquakes because much of it sits atop the muddy sediments of drained lake beds that quiver as quake waves hit.
The magnitude-8.1 quake in 1985 that killed at least 6,000 people and destroyed many buildings in Mexico City was centred 250 miles (400 kilometres) away on the Pacific Coast.