MANILA (Xinhua): An earthquake with a magnitude of 5.1 hit Mindanao, Philippines at 0832 GMT on Monday, the GFZ German Research Center for Geosciences said.
The epicenter, with a depth of 10.0 km, was initially determined to be at 8.06 degrees north latitude and 126.30 degrees east longitude.
It did not trigger a tsunami alert, according to the US Tsunami Warning System and the Philippine seismological agency.
Earthquakes regularly strike the Philippines, which sits along the Pacific Ring of Fire, an arc of intense seismic and volcanic activity that stretches from Japan through Southeast Asia and across the Pacific basin.
Most are too weak to be felt by humans but strong and destructive quakes come at random with no technology available to predict when and where they will happen.
In December, a 7.6-magnitude quake struck off Mindanao, briefly triggering a tsunami warning.
That sent residents along the east coast of the island fleeing buildings, evacuating a hospital and seeking higher ground.
At least three people died. - Xinhua