Two mild earthquakes struck the provinces of Sultan Kudarat and Zamboanga del Norte on Thursday morning, according to the Philippine Institute of Volcanology and Seismology (Phivolcs). In its bulletin, Phivolcs said the first quake with magnitude of 2.7 occurred at 3:29 a.m. with the epicenter traced at 40 kilometers northwest of Kalamansig in Sultan Kudarat. The quake, which was tectonic in origin, had a depth of 31 kilometers. The second tremor with a magnitude of 3.6 happened at 5:37 a.m. with epicenter located at 41 kilometers northwest of Liloy in Zamboanga Del Norte. Phivolcs said the temblor, which was tectonic in origin, had a shallow depth of 14 kilometers. It added that no aftershocks are expected from these quakes.