A 6.6-magnitude earthquake rocked central Chile, causing buildings to sway in the capital and nervous people to run out into the streets.
But Chile's emergency services office said no damages to infrastructure were immediately reported and discarded the possibility of a tsunami.
The US Geological Survey said the quake's epicentre was located about 40 miles south-west of the city of Coquimbo. Its depth was 6 miles.
Chile is one of the world's most earthquake-prone countries. A magnitude-8.8 quake and the tsunami it unleashed in 2010 killed more than 500 people, destroyed 220,000 homes, and washed away docks, riverfronts and seaside resorts.
That quake was so strong it shortened the Earth's day slightly by changing the planet's rotation.
The strongest earthquake ever recorded also happened in Chile, a magnitude-9.5 in 1960 that killed more than 5,000 people.