CANGREJAL, Costa Rica — A powerful 7.6-magnitude earthquake shook a wide swath of Central America Wednesday, collapsing houses, blocking highways, and causing panic and at least one death from a heart attack.
President Laura Chinchilla of Costa Rica announced there were no reports of major damage and called for calm.
At the epicenter, the beach town of Cangrejal, Jairo Zuniga said everything in his house fell when the quake hit at 10:42 a.m.
‘‘It was incredibly strong.’’ the 27-year-old said. “I’ve felt earthquakes, but this one was, ‘Wow.’ ’’
The US Geological Survey said the quake was centered about 38 miles from the town of Liberia and 87 miles west of the capital, San Jose, where frightened people ran into the streets.
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The magnitude initially was estimated at 7.9 but was quickly downgraded. Local residents said it shook for about 30 seconds and was felt as far away as neighboring Panama and Nicaragua, where school was canceled in some areas.
Officials initially warned of a possible tsunami, and local police supervisor Jose Angel Gomez said about 5,000 people had been evacuated from various coastal towns.