SINGAPORE, June 14 (Reuters) - A magnitude 6.3 earthquake struck off the southern Philippine island of Mindanao on Sunday, the United States Geological Survey said.

The quake was centred 99 miles (159 km) east south east of General Santos and had a depth of 47 miles, the USGS said. (Reporting by Sanjeev Miglani; Editing by Jerry Norton)

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