A 6.1 magnitude earthquake shook Chile on Friday near the city heavily damaged in a devastating February quake, but there were no immediate reports of damage.
Residents in Bio-Bio region were woken up by the tremor that lasted 25 seconds, Radio Cooperativa reported.
"There is no reported damage to infrastructure or injuries, but people were shaken up," said a spokeswoman for the state National Emergency Office.
The U.S. Geological Survey said the quake had a magnitude of 6.1 and struck at 6:03 a.m. (1003 GMT) 41 miles (66 km) south of Concepcion.
The Feb. 27 magnitude 8.8 quake and ensuing tsunamis killed about 500 people and tore up roads and towns. It caused an estimated $30 billion in damage to infrastructure, homes and industry, the Chilean government said last month.
ReutersLast Mod: 23 Nisan 2010, 15:01