Police are still conducting post-blast investigation in the area to identify the type of bomb used.
Residents were warned to be vigilant just in case a secondary bomb was left behind by the perpetrators.
Some businesses nearby opted to close for fear of more explosions.
On Tuesday, a roadside bomb exploded in South Upi, Maguindanao, killing a motorist and wounding his passenger.
Shortly after, another bomb, which was bigger, was found hidden near the market area a few meters from the explosion site.
The bombing was the handiwork of the Bangsamoro Islamic Freedom Fighters, according to Joint Task-Force Central spokesperson Lt. Col. Anhouvic Atilano.
North Cotabato Governor Nancy Catamco condemned the recent bombing. She called on everyone to cooperate to bring justice to the victims.
