MANILA (AFP) - A strong 6.1-magnitude quake struck off the southern Philippines on Friday, the United States Geological Survey (USGS) said.
There were no immediate reports of damage or casualties after the undersea quake struck at 2.43pm GMT some 62km north-east of Surigao city on Mindanao island.
The Philippine Institute of Volcanology and Seismology said the quake occurred at a depth of 26km and was felt on Mindanao's north-east tip as well as on nearby Leyte island.
The Philippines is regularly hit by quakes due to its location along the so-called chain of fire of islands of the Pacific Ocean that were created by volcanic activity.