"Unexplained? Well, if I know the Nexus-going sort who resort to lethal measures, they'll out themselves in time. They do so love to gloat about their recent kills or brag about how they enjoy their particular sport. I think the anti-violence field makes them just as complacent as the rest of us; can't worry about repercussions when the wronged or offended can't raise their hand against you, hm? That or the lack of being able to carry out murder makes their brains spotty. Either way, justice will come in due time, I'm sure."