A cluster of tremors shook central Chile on Friday afternoon, leaving locals worried that a bigger earthquake may be imminent and prompting some early closures of schools and workplaces.
At least seven tremors struck offshore the coastal city of Valparaiso in less than an hour, with the largest rattling buildings in the Chilean capital Santiago some 102 kilometers (63 miles) away.
The United States Geological Survey said the most powerful tremor, which hit at around 1:05 p.m. local time (1605 GMT), was magnitude 5.7, with a depth of 9 miles (14 km) and an epicenter 12 miles (20 km) west of Valparaiso.
No damage was reported by the emergency office and the navy said the quake had not been severe enough to cause a tsunami.
But worried locals hurried home from work and schools were told to finish early.
"This chain of tremors has caused a lot of worry and families want to be together," Valparaiso city Mayor Jorge Sharp said in broadcast comments. Authorities advised citizens to ensure that they had emergency kits ready.
Chile, on the Pacific 'ring of fire', is one of the most earthquake-prone countries in the world. Builders follow strict construction codes and Chileans are usually stoic about the country's regular tremors.
But the string of tremors on Friday follows an entire week of smaller ones centered close to Valparaiso after a 6.9 magnitude quake offshore on Monday.