User blog comment:Jancz00/Nihlus in ME2/@comment-1629927-20110126214407

Well, we don't really know for sure he's dead, but it'd be stupid to say he was "Just sleeping." or that he's alive, but, since nobody cared to take his pulse and see if Nihlus really had come down with a fatal case of lead poisoning, we'll just say he's dead until somebody at Bioware's forced to say the obvious.