source: When doctors finally did see the hostages, in ambulances or hospitals, medical personnel were unable to prescribe appropriate treatment, as officials had not informed them of the substance that was used. # Hostages died because of inappropriate treatment due to the military's withholding information on gases.
target: When doctors finally did see the hostages, in ambulances or hospitals, medical personnel were unable to prescribe appropriate treatment, as officials had not informed them of the substance that was used. And since If a specific treatment is not given to a person in critical health situation, the person plausibly will die. Hostages died because of inappropriate treatment due to the military's withholding information on gases.