People wearing masks gather outside buildings after an earthquake in Mexico City, captial of Mexico, on April 27, 2009. A 5.6-magnitude earthquake hit southern Mexico on Monday at 11:46 AM local time, with an epicenter 23 kilometers northeast of Zumpango, a small town in the state of Guerrero, and with a deepness of 41.2 kilometers, the US Geological Survey Earthquake Hazards Program reported. The quake was felt in Mexico City. [Xinhua]

A medical worker (L) offers help to a woman after an earthquake in Mexico City, captial of Mexico, on April 27, 2009. [Xinhua]