SINGAPORE, Aug 2 (Reuters) - An earthquake of magnitude 7 struck off Indonesia's island of Sumatra on Friday, the United States Geological Survey (USGS)said.
The Indonesian geophysics agency issued a tsunami warning after the quake, which the USGS said had hit at a depth of 59 km (37 miles), about 227 km (141 miles) from the city of Teluk Betung on the island.
There were no immediate reports of damage or casualties. (Reporting by Clarence Fernandez)
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