UPDATED AT 5:33 a.m.

A magnitude 6.7 earthquake jolted Batangas province early Saturday morning, the Philippine Institute of Volcanology and Seismology said.

The epicenter of the quake, which struck at 4:49 a.m., was 16 kilometers southwest of the town of Calatagan, according to Phivolcs. An aftershock with a magnitude of 5.1 was recorded at 4:57 a.m.

The quake was tectonic in origin and had a depth of 116 kilometers.

There were no immediate reports of damage.

The quake was also felt in Metro Manila based on netizens' posts on Twitter and reports reaching The Manila Times. WITH A REPORT FROM NIKKI J. DELOS REYES