Manila, Philippines - A 4.5 magnitude earthquake struck off Mindoro island at 8:31 p.m. Tuesday, the US Geological Survey said.

There were no immediate reports of damage or injuries.

The tremor was located 110 kilometers east-southeast of Calapan City in Oriental Mindoro province at a depth of 10 kilometers.

The Philippines sits on the Pacific "Ring of Fire" where continental plates collide causing frequent seismic and volcanic activity.