MANILA, Sept. 12 (Xinhua) -- An offshore earthquake with a magnitude of 5.7 rattled Davao Oriental province in the southern Philippines on Monday afternoon, the Philippine Institute of Volcanology and Seismology said.
The institute said the quake, which occurred at 4:14 p.m. local time (0814 GMT), hit at a depth of 27 km, about 173 km southeast of Tarragona town.
The tremor was also felt in nearby Davao City and areas on Mindanao island.
The institute said the tectonic quake will trigger aftershocks but not cause damage.
The Philippines has frequent seismic activity due to its location along the Pacific "Ring of Fire".