Update 12:05 p.m. EDT: The U.S. Geological Survey has downgraded the magnitude to 7.2. No major damage is reported in Acapulco, the city nearest the epicenter.

Update 11:10 a.m. EDT: The Pacific Tsunami Warning Center says no tsunami is expected in Mexico or Hawaii.

Power and the Internet are reported out in parts of Mexico City.

Original story:

MEXICO CITY (Reuters) - A powerful earthquake struck Mexico Friday, shaking buildings in the capital and sending people running out into the street.

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The magnitude-7.5 quake was centered in the western state of Guerrero, north of the beach resort of Acapulco, the U.S. Geological Survey said.

There were no immediate reports of major damage.