The miners were digging for gold when the tunnel in Barangay (Village) Temporan collapsed over the weekend.
Reports said the victims had no permit from the local government unit.
Barangay Temporan head Yolly Bernabero said they learned of the victims’ plight from their companion, who managed to dig his way out of the tunnel.
The municipal government of Magpet has ordered the immediate closure of the illegal mining site in Barangay Temporan to prevent a repeat of the incident.