MANILA, Sept. 13 (Xinhua) -- A 5.5-magnitude earthquake struck Quezon province in the Philippines' main Luzon island on Friday, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
The institute said the offshore quake, which struck at 4:28 p.m. local time, hit at a depth of 10 km, about 40 km northeast of Burdeos, a town on Polillo island in Quezon province.
There was no report of casualties or damages.
The quake, which was tectonic in origin, was also felt in Metro Manila and Camarines Norte province south of Manila.
The institute said aftershocks are expected.