The aftershock was reported at 8:09 p.m., with the epicenter at 16 kilometers southeast of Columbio town in Sultan Kudarat.
The aftershock had a depth of five kilometers and was tectonic of origin.
The Sultan Kudarat quake happened a little over 30 minutes after the magnitude 6.3 quake in North Cotabato.
Phivolcs said damage and aftershocks were to be expected following the North Cotabato quake.
/atm
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