Washington:
A 6.0 magnitude earthquake today struck off the Chilean coast, about 88 kilometres south-southwest of the port city of Valparaiso, US seismologists said.
The earthquake's epicentre was at a depth of 23 km, and hit at around 0556 IST, according to the US Geological Survey (USGS).
No immediate damage or casualties were reported, and the Pacific Tsunami Warning Center had not yet released its estimate of the event.
The South American country has been on edge since a devastating 8.8-magnitude quake last year unleashed a tsunami and killed more than 500 people.
The quake was strong enough to be felt in the capital Santiago, according to preliminary reports from city residents.