Who do you think it killed Haibara?

I would say it was Bayer (which was that bootleg As Nodt that was beaten by Gojo)

https://preview.redd.it/uwhk6sl0tvif1.png?width=2000&format=png&auto=webp&s=94c5e5c34cbdcd7fed2b85f47a181761fd92cbfa