A 6.6 magnitude earthquake struck Costa Rica's Pacific coast on Tuesday, swaying buildings and sending people running out to the streets in the nation's capital of San Jose. There were no immediate reports of major damage.
The US Geological Survey said the quake was centered in the Guanacaste region of the Central American country, 38 miles (61 kilometers) away from the city of Liberia.
It had a depth of 24.5 miles (39 kilometers), according to a preliminary report.
The region suffered a powerful earthquake in September, when a 7.6 earthquake rattled the same coasts, causing panic, evacuations but minor damage.