FOUR people died and three others sustained serious injuries on Wednesday night while trying to mine in Ruli coltan mining, Ruli sector in Gakenke district.They were working with EPROCOMI, a mining company in the area.The deceased are reported to have gone for mining during the night while their co-workers were still away.Chief Supertendent Francis Gahima, the Northern Police spokesperson, confirmed the incident, saying the group was burglars who went to steal at night. Gahima said four died on the spot, three sustained injuries, while three more have not been accounted for.Police suspect the mines walls in the tunnels caved in on the miners."Illegal miners are at high risk,” said Gahima.The identities of the deceased were yet to be identified by press time.