A MAGNITUDE 4.1 earthquake jolted Zamboanga del Norte on Saturday afternoon, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
The agency said the earthquake struck 11 kilometers off Siayan at 1:03 p.m. and had a depth of 9 km. Its origin was tectonic.
Phivolcs said no damage and aftershocks were expected from the earthquake. ELSHAMAE ROBLES