A 6.5-magnitude earthquake struck Indonesia Saturday, according to the U.S. Geological Survey (USGS).
The quake was followed by a brief tsunami alert but no tsunami warning was issued. As of Saturday afternoon, no damages or fatalities had been reported.
The quake's epicenter was just off Simeulue island, about 160 miles southwest of Medan on Sumatra's northwest coast, reported the USGS. The quake had a depth of 18.6 miles.
Simeulue island is near the epicenter of the Dec. 26 quake that caused a massive tsunami that killed at least 200,000 people in 13 countries.
Some scientists say that the fault line that triggered the Dec. 26 tsunami is still unstable, leaving the risk high for another massive earthquake.
Long-term recovery continues in the region after the December tsunami. Faith-based disaster response groups have launched a massive ecumenical effort that is helping hundreds of thousands of people.
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