An earthquake of magnitude 8.1 struck the southern coast of Mexico late on Thursday, the U.S. Geological Survey (USGS) said, killing at least five people, triggering small tsunami waves and damaging some buildings. The quake was apparently stronger than a devastating 1985 tremor that flattened swathes of Mexico City and killed thousands, but initial reports of damage in the city were limited. The epicenter was 54 miles (87 km) southwest of the town of Pijijiapan in the southern state of Chiapas, at a depth of 43 miles. Three people were killed in the state, said Governor Manuel Velasquez. Two more people were killed in neighboring Tabasco state, the state governor said. The quake triggered waves as high as 2.3 ft (0.7 m) in Mexico, the Pacific Tsunami Warning Centre said. It said widespread, hazardous tsunami waves were possible within three hours. However, there was no tsunami threat for American Samoa and Hawaii, according to the U.S. Tsunami Warning System. As fa...