A magnitude 5.5 quake rocked Eastern Samar yesterday morning, with Phivolcs warning of possible aftershocks.

The Philippine Institute of Volcanology and Seismology (Philvocs) said the quake was recorded at 8:43 a.m. and was tectonic in origin.

In its initial bulletin, it traced the epicenter to 138 kilometers (km) northeast of Guian, eastern Samar at a depth of 20 kilometers.

There were no reports of damages or casualties.*PNA