Z.S., particularly his statement that it could not be excluded that some of the injuries had been inflicted prior to the fall, which in turn might have been inflicted by treatment in violation of the Convention;
6.4 根据这些要素，委员会认为，缔约国有足够的理由对申诉人有关其儿子在死前遭受了酷刑的申诉进行调查。