A 6.1 magnitude earthquake has struck Indonesia's Aceh province on the northern tip of Sumatra island. The U.S. Geological Survey said two aftershocks of magnitudes 5.2 and 5.3 shook the area six to eight hours after the initial tremor. Rescue workers were searching for an unknown number of people trapped under rubble.
Earthquake Hits Indonesia's Aceh

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Injured residents receive treatment outside the local clinic after a strong earthquake hit in Bener Meriah district, July 2, 2013.

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Residents stay outside their damaged house after it was hit by a strong earthquake in Bener Meriah district, July 2, 2013.