Sebastian Pinera has been sworn in as president of Chile, minutes after it was hit by the largest aftershock since last month's devastating earthquake.
The 7.2-magnitude tremor was centred in O'Higgins Region, some 140km (90 miles) south of the city of Valparaiso, where the inauguration ceremony took place.
A BBC correspondent in the capital, Santiago, says buildings there shook and people rushed out on to the streets after Thursday's tremor.
However, there have so far been no reports of any damage.
The National Emergency Office warned people in coastal areas extending from Coquimbo, 500km north of Santiago, to Los Lagos, 1,000km to the south, to seek higher ground in case of a tsunami.
But the US Pacific Tsunami Warning Center, based in Hawaii, said the aftershocks were too small to cause "a destructive widespread tsunami".
BBC
SKY however is now giving out reports of significant damage.