“Presumed guerrillas have opened fire at two civilian helicopters that were flying repairmen to the site where leftist rebels had damaged an oil pipeline in the north of Colombia, state-run oil company Ecopetrol claimed Sunday. The oil company told Spanish news agency EFE that the helicopter was attacked by sniper fire while flying over Tibu, the municipality where rebel group FARC allegedly blew up the pipeline.”
Source: Rebels attack Ecopetrol helicopters in northern Colombia