WASHINGTON - CHILE was rattled by a 6.1 magnitude aftershock on Sunday, one month after a major earthquake and tsunami ravaged the central part of the country killing 452 people, the US-based Geological Survey reported.

The temblor stuck at 5.43pm (2143 GMT, 5.43am on Monday Singapore time), with its epicentre located offshore at 282 kilometres (175 miles) southwest of Santiago, at a depth of 19 kilometres (12 miles), the Survey's National Earthquake Information Centre said.

There were no immediate reports of damage or injuries in Chile from the quake and no alert has been issued by the US-based Pacific Tsunami Warning Center.

In February, a 7.0-magnitude quake centered around Concepcion in Chile killed at least 452 people and caused some US$30 billion (S$42.1 billion) in damage. Nearly 100 people are still missing.