7.6-magnitude aftershock rocks Chile

09:52, Apr 03 2014
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A general view of Iquique city from the top floor of a building during a vertical evacuation after a Tsunami alarm at Iquique city, north of Santiago.
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Residents walk to higher ground after a Tsunami alarm at Talcahuano city, south of Santiago.
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Residents take their belongings to higher ground after a Tsunami alarm at Talcahuano city, south of Santiago.
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Residents walk to higher ground after a Tsunami alarm at Talcahuano city, south of Santiago.
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Residents on the top floor of their building during a vertical evacuation after a Tsunami alarm at Iquique city, north of Santiago
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Residents stay on the top floor of their building during a vertical evacuation after a tsunami alarm at Iquique city, north of Santiago on the southern Pacific coast, April 1, 2014.
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People are evacuated from their shelter after a tsunami alarm at Antofagasta city, north of Santiago on the southern Pacific coast, April 1, 2014.
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A fire is seen at Iquique city from the top floor of a building during a vertical evacuation after a tsunami alarm at Iquique city, north of Santiago on the southern Pacific coast, April 1, 2014.
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Vehicles and boats lie on the shore after a tsunami hit the northern port of Iquique, April 2, 2014.
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Rescue workers inspect a car caught under a landslide after an earthquake and tsunami hit the northern port of Iquique, April 2, 2014.
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People stand in line to buy fuel after an earthquake and tsunami hit the northern port of Iquique, April 2, 2014.
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Soldiers guard a supermarket to prevent looting after a tsunami hit the northern port of Iquique, April 2, 2014.
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Fishermen try to salvage their boats in the aftermath of an earthquake and tsunami that hit the northern port of Iquique, April 2, 2014.
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Fishermen try to salvage boats damaged by an earthquake and tsunami that hit the northern port of Iquique, April 2, 2014.
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Fishermen inspect the damage caused by an earthquake and tsunami that hit the northern port of Iquique, April 2, 2014.
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A cameraman records near cars caught under rubble after an earthquake and tsunami hit the northern port of Iquique April 2, 2014.
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A resident looks at debris around a home after an earthquake and tsunami hit the northern port of Iquique April 2, 2014.
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A resident walks along a damaged road to Alto Hospicio commune after an earthquake and tsunami hit the northern port of Iquique April 2, 2014.
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Residents walk to higher ground after a new 7.6-magnitude earthquake hit the northern port of Iquique, April 3, 2014.
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Residents set up a tent on a street after an earthquake and tsunami hit the northern port of Iquique April 2, 2014.
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People line up outside a store after an earthquake and tsunami hit the northern port of Iquique April 2, 2014.
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A resident (C) jumps over cracks along a damaged road leading to Alto Hospicio commune, after a series of aftershocks, in the northern port of Iquique April 3, 2014.
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People walk next to a crack along a damaged road leading to Alto Hospicio commune, after a series of aftershocks, in the northern port of Iquique April 3, 2014.
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A man pushes his belongings along a damaged road leading to Alto Hospicio commune, after a series of aftershocks, in the northern port of Iquique April 3, 2014.

Chile has been rocked by a powerful 7.6-magnitude aftershock that shook buildings, rattled nerves and forced the evacuation of President Michelle Bachelet from her hotel room in the northern city of Arica.

A tsunami warning was issued and then cancelled after waves only reached a height of 0.7 metres. There were no reports of casualties or damage to infrastructure, Chile's Onemi emergency office said.

The aftershock caused buildings to shake and people to run out into the streets in the port of Iquique, which was one of the cities that saw some damage from Tuesday night's big quake. But there were no immediate reports of new damage or injuries from the latest tremor, which was one of dozens that have followed the 8.2 quake.

President Bachelet had been visiting the area assessing damages after Tuesday's quake. An evacuation of low-lying areas on the northern coast means many people could be spending another sleepless night away from their homes.

The aftershock was centered 23 kilometres south of Iquique. The US Geological Society said the aftershock had a depth of 20 kilometers.

It was felt across the border in southern Peru, where people in the cities of Tacna and Arequipa reportedly fled buildings in fear.

Authorities reported just six deaths from the 8.2-magnitude quake. It was possible others could have been killed in older structures made of adobe in remote communities that weren’t immediately accessible, but it was still a very low toll for such a powerful shift in the undersea fault that runs along the length of South America’s Pacific coast.

Chile is one of the world’s most seismic countries and is particularly prone to tsunamis, because of the way the Nazca tectonic plate plunges beneath the South American plate, pushing the towering Andes cordillera ever higher.

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AP