- Associated Press - Saturday, September 23, 2017

MEXICO CITY (AP) — Seismologists say Saturday’s magnitude 6.1 earthquake in southern Mexico is believed to be an aftershock from a powerful Sept. 7 quake that measured 8.1 and killed at least 90 people.

U.S. Geological Survey geophysicist Paul Caruso tells The Associated Press that a strong earthquake like the one earlier this month can damage buildings that don’t collapse, making them more vulnerable: “So a smaller earthquake can cause the damaged buildings to fail.”

Mexico’s National Seismological Service says its own network has recorded thousands of aftershocks of the Sept. 7. It recorded 15 of magnitude 4.0 or greater just in the first in the first nine and a half hours of Saturday.

 

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