About 60 people were injured in a magnitude 6.2 earthquake of south-central Peru near the Pacific coast shortly after midnight on Monday (local time).
Their injuries include broken bones, concussion and cuts caused by falling objects.
The US Geological Survey says the quake was centred 23km southeast of the town of Ica at a depth of 39km.
No damage to mining operations was reported.
A magnitude 8.0 quake in 2007 killed more than 500 people in Ica and wrecked thousands of homes.