The Pacific Tsunami Warning Center has issued a tsunami warning for Chile and Peru after a powerful 7.8-magnitude aftershock rocked Chile's northern coast, which was hit by a powerful 8.2-magnitude earthquake Tuesday night.

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A 7.8-magnitude earthquake struck off Chile's northern coast Wednesday night, a day after an 8.2-magnitude quake hit the region, the U.S. Geological Survey said.

The powerful aftershock caused buildings to shake in the port of Iquique, which saw some damage from the big quake on Tuesday. There are no immediate reports of new damage or injuries.

The latest tremor came 45 minutes after a strong 6.4-magnitude aftershock shook the same area.

The stronger aftershock's epicenter was 14 miles south of Iquique. The USGS said the aftershock had a depth of 12 miles.

The Associated Press contributed to this report.

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