US monitor: 7.5-magnitude quake hits off Indonesia
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A strong earthquake has hit off the western coast of Indonesia's Sumatra island and triggered a tsunami watch.
The US Geological Survey says the 7.5-magnitude temblor struck at a depth of 20 miles (30 kilometers) and is centered on a small island off the coast of Sumatra, where a massive earthquake and tsunami hit in 2004. (AP)
