A moderate earthquake shook Mexico City Friday, causing no immediate reports of damage or injuries. According to the U.S. Geological Survey, the quake in the Pacific Coast state of Guerrero had a preliminary magnitude of 5.4. The state's government said it had initiated security protocols but did not immediately report damage or injuries. Office workers were evacuated from their buildings after the quake set off alarms in Mexico City, but Mayor Miguel Angel Mancera said on his Twitter account that there were no immediate reports of damage or injuries. Mexico City is vulnerable to distant earthquakes due to the fact that much of it sits atop the muddy sentiments of drained lake beds. A magnitude-8.1 quake in 1985 killed at least 6,000 people and destroyed a number of buildings in Mexico City. It was centered 400 kilometers away on the Pacific Coast.
