AlHijjah 22, 1433, Nov 7, 2012, SPA -- A strong earthquake off the coast of Guatemala on Wednesday shook buildings in Guatemala City and San Salvador and was felt as far away as Mexico City, Reuters witnesses said, but there were no immediate reports of damage or injuries. According to Reuters, the U.S. Geological Survey said the magnitude 7.5 earthquake struck off the Central American nation's Pacific coastline, 28 miles (45 km) southwest of Champerico, Guatemala, near the border with Mexico. The epicenter was 25 miles (33 km) below the surface. A Reuters witness in Guatemala City said people were evacuating homes in parts of the capital, and firefighters and rescue workers were on alert. Office workers were also evacuating buildings in Mexico City.