But how would they have killed him? Was he shot or stabbed? He could have been beaten to death I suppose. But it seems that the first two possibilities would have shown up on his body.
You can kill someone by knocking them off their feet and having them hit their head on the pavement. Wouldn’t necessarily be readily visible on the body if the bump was within the hairline.
Testing chemical or biological weapon on him? “If” he was involved with stuxnet or something secret, could be anything.
Wonder how long til the autopsy results are in?