MEXICO CITY (AP) _ A strong earthquake shook southern and central Mexico late Sunday, causing buildings to sway and people to flee into the streets in Mexico City and the resort city of Acapulco.

There were no immediate indications of major damage or injuries.

Mexico's National Seismological Services said the magnitude was 6.1. The U.S. Geological Survey in Golden, Colo., said the quake had a magnitude of roughly 5.5 and an epicenter located 25 miles north of Acapulco.

Isabel Zaragoza, a receptionist at the Acapulco Tortuga hotel, said tourists ran out of their rooms when the seven-story building began to sway, but there appeared to be little damage, ``aside from the scare.''

``Power went out in some neighborhoods, but not on the coast,'' she said. ``I called home, and they don't have power, but everything's fine.''

Police helicopters flew over Mexico City to survey damage, but reported finding none. The city, built on a lakebed, often feels quakes that are much stronger hundreds of miles away.

On Sept. 19, 1985, the city was hit by an 8.1-magnitude quake, which destroyed 400 buildings and killed more than 9,500 people.