A magnitude 4.6 earthquake struck the sea off Palauig, Zambales early Sunday morning, Dec. 28, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.

A magnitude 4.6 earthquake struck the sea off Palauig, Zambales early Sunday morning, Dec. 28, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.