The IEDs were inside a sack, which was found at Malagapas Dumpsite in RH-10 village at about 10p.m., the Office of Civil Defense- Autonomous Region in Muslim Mindanao Disaster Risk Reduction and Management Council said.
The recovered items were fashioned from two 60-mm and one 81mm mortar cartridges, all of which were cellphone-detonated, the report added.
Recovery efforts were due to police and military’s Task Force Kutawato.
Investigation is still ongoing.
The area where the IEDs were located was only a few meters away from the People’s Palace (Cotabato City Hall), the OCD-ARMM DRRMC said.
Last week, blasts rocked Mindanao area, particularly in North Cotabato and Cotabato City, which killed at least eight people.