A magnitude 2.5 earthquake was recorded in parts of Marinduque island province on Thursday afternoon, with its epicenter located in Torrijos town, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported.
The tectonic tremor struck at 12:44 p.m., about 21 kilometers southwest of Torrijos, at a depth of only 6 km.
Phivolcs explained that tectonic earthquakes occur when rocks suddenly move along faults and plate boundaries.
The agency said no damage or aftershocks were expected from the minor quake.
Marinduque Island is located in the southern part of Luzon. It is separated from mainland Luzon by Tayabas Bay.