Strong, long 7.9 quake shakes Mexico City
Mexico City - A strong, long 7.9 earthquake with epicentre in Guerrero state shook central southern Mexico on Tuesday, swaying buildings in Mexico City and sending frightened workers and residents into the streets.
The US Geological Survey had no immediate information on the strength or the epicentre of the quake. Mexico's National Seismological Survey said the tremor had an epicentre southwest of Ometepec.
It was 10km underground.
AP reports that Mexico City Mayor Marcelo Ebrard's Twitter account said the water system and other "strategic services" were not experiencing problems.