The Philippine Institute of Volcanology and Seismology (Phivolcs) on Tuesday morning reported that a magnitude 6.1 earthquake shook Sarangani province.
The quake occurred at 9:18 a.m. Its epicenter was located 155 kilometers south west of Sarangani, Davao Occidental.
The tremor with gravity of focus 312 kilometers did not cause any damage.
However, Phivolcs said that there will be expected aftershocks.
Three other quakes were recorded by Phivolcs on Tuesday morning.
The first mild quake with magnitude 2 occurred at 12:50 a.m. in Tingloy Batangas while the second one with magnitude 3.5 jolted Basco, Batanes shortly after at 1:34 a.m.
The third quake reported with magnitude 2 was also traced in Tingloy, Batangas. It occurred around 1:41 a.m.
Phivolcs said the quakes recorded on Tuesday were determined to be tectonic in origin.