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An earthquake with a magnitude of 6.9 has shaken southern Peru, leaving nearly two dozen people injured.

The U.S. Geological Survey says Friday's quake was centered 52 kilometers from the coastal city of Ica and was registered at a depth of 15 kilometers.

The Reuters news agency reports the quake shook buildings in Peru's capital, Lima. Officials in Ica say 20 people have been treated at the hospital. Their injuries have been described as non life-threatening.

In 2007, a massive 8.0-magnitude earthquake along Peru's central coast killed at least 540 people and left thousands homeless.  Peru lies near the boundary of two tectonic plates, making the region vulnerable to earthquakes.
USGS Peru quake location map
Some information for this report was provided by AP.