SANTIAGO, Chile (AP) - The U.S. Geological Survey says a magnitude-6.4 earthquake has struck off Chile's central coast.
There were no immediate reports of damage or injuries.
The USGS says the quake's epicenter was 151 kilometers (94 miles) south-southwest of Concepcion, Chile, at a depth of 20 kilometers (12 miles).
Radio stations in the Bio-Bio region reported no major damages or injuries from Monday's tremor.
The area has been shaken by hundreds of smaller quakes since a huge magnitude-8.8 quake hit on Feb. 27, triggering a tsunami and killing 486 people. On Sunday, a 5.9-magnitude quake struck the area, one of more than a dozen perceptible temblors since Saturday.
Tens of thousands of Chileans are still living in tents or temporary huts.
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