According to the U.S. Geological Survey, Sunday's tremors were magnitude 6.0 and magnitude 5.8.
The quakes follow the intense tremor that rattled nearby two days before. The incident was reminiscent of the deadly earthquake that rocked Chile a year ago.
Sunday's earthquakes struck about 25 km from Chile's second-largest city, Concepcion and 420 km from the capital, Santiago.
The larger one hit a depth of 13.3 km according to the USGS.
There have been no immediate reports of damage.
Just two days ago, after Friday's 6.8 magnitude quake, residents near Concepcion flooded streets after fleeing office buildings and high-rise apartments. Images showed hundreds of terrified people crying and running to save loved ones.
The city is still rebuilding from the colossal 8.8 magnitude quake that struck February 27, 2010, killing hundreds.
With files from CNN