Board Thread:Contact the Moderators/@comment-35336328-20190913094216/@comment-28245851-20190913182634

We're not sure why you're asking us, we only know as much as you do. This board is also for wiki-related questions, please keep that in mind. I'll still answer as best I can though.

Technically, Jack does the killing, not Toko. Within the DR universe, news outlets have only have figured out that "Genocider Sho/Genocide Jack" (the name the news gave her) is a school girl with DID, but not who she was specifically. It's possible with all the resources HPA has, they managed to figure out Jack's identity. However we never officially learn if HPA or Jin are aware of Jack, even the talent title Jack gives herself could be self-proclaimed.

But given the dubious morals of HPA and even Jin, it's possible they were aware and simply wanted to study less savory talents, such as Murderous Fiend, Spy, Gangster, etc.

We just don't know for sure either way.