With only what you've told us, and what we got from the news article, I'd be seriously worried about his intentions.
No remorse, no apology and a history of doing as he pleases. Seems to be he's a prime candidate for getting in touch with the victim's family (who in this case happens to also be his family, making it a whole lot easier) just to further the pain he's caused.
I'm very sorry for your loss, and that 7 years later you are faced with this decision.