Just one death was reported in the strongest earthquake to strike Mexico since a 1985 tremor that killed thousands of people, but panic was widespread among residents haunted by memories of the last big quake.

Two women leapt from the second-story window of a swaying building during Tuesday morning's quake, seriously injuring themselves, police said. Another 240 were treated for shock, said Mayor Manuel Camacho Solis.Two little girls hit by falling debris were briefly hospitalized, 13 buildings were damaged seriously enough to be closed for repairs and parts of the city of 19 million were without water because an aqueduct cracked.

The tremor, which measured 6.8 on the Richter scale, felled a power line just north of the city center that electrocuted a man of about 30, said Maria Cortina Benitez, a city police spokeswoman.

Port facilities in the Pacific resort of Acapulco and city hall in the Guerrero state capital, Chilpancingo, sustained minor damage.

"This earthquake reactivated the terror that remains engraved in the minds of people since '85 and that hasn't been able to be resolved," psychoanalyst Antonio Santamaria said in a telephone interview. At least 9,500 died in that quake, which registered 8.1 on the Richter scale.

The epicenter of Tuesday's quake was 40 miles east of Acapulco, about 200 miles south of Mexico City, said the U.S. National Earthquake Information Center in Golden, Colo.

"I was hysterical because I thought the same thing was going to happen that happened in '85 because it felt quite strong and because my husband, my daughter and my grandchildren were all in different places," said Sara Torres de Zamorano, 59.

She lives in Tlatelolco, where 472 people died when two buildings collapsed in 1985.