New earthquake, magnitude 6.1, shakes jittery Mexico

MEXICO CITY — A strong new earthquake shook Mexico on Saturday, causing new alarm in a country reeling from two still-more-powerful quakes this month that has killed nearly 400 people.The U.S. Geological Survey said the new, magnitude 6.1 temblor was centered about 11 miles (18 kilometers) south-southeast of Matias Romero in the state of Oaxaca, which was the region most battered by a magnitude 8.1 quake on Sept. 7.It swayed buildings and set off a seismic alarm in the capital, prompting c