Relatively strong magnitude aftershocks from the magnitude 6.3 quake that left at least seven fatalities and dozens injured persist five days after the tremor, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).
As of Monday, Phivolcs recorded a total of 740 aftershocks, with 379 plotted or confirmed by multiple instruments and 43 felt or with registered intensities.
The strength of the aftershocks ranged from magnitude 1.5 to 5.5, it said.
Most recently, relatively strong aftershocks of magnitude ranging from 4.3 to 4.9 were recorded near Tulunan, Cotabato on Sunday evening, from 7:50 p.m. to 8:20 p.m.
The strongest magnitude 4.9 quake was recorded at 7:59 p.m., with an epicenter at 26 kilometers southeast of Tulunan, Cotabato.
It was tectonic in origin and had a depth of 11 kilometers.
Intensity 4 was felt in Kidapawan City and Davao City; intensity 3 in Koronadal City and Tampakan, South Cotabato; and intensity 2 in General Santos City and Glan, Sarangani.
Phivolcs had advised residents of the affected areas to remain vigilant as aftershocks were expected to persist for weeks or months.