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HONG KONG, April 19 (Xinhua) -- An earthquake with a magnitude of 5.1 jolted 170 km SSE of Sarangani, Philippines, at 13:09:30 GMT on Sunday, the U.S. Geological Survey said.

The epicenter, with a depth of 16.95 km, was initially determined to be at 4.0274 degrees north latitude and 126.1647 degrees east longitude.