What crime did Riddick commit?

Could you elaborate on the specifics of the crime that Riddick is alleged to have committed? Is there any evidence or testimony that has been presented in connection with this alleged crime? Furthermore, has Riddick been formally charged with this offense, and if so, what are the potential consequences he may face if convicted? Lastly, are there any mitigating factors or defenses that Riddick might be using to challenge the accusations against him?