The story I heard a few places today was that something awful happened to his wife and daughter in the mayhem and that is what caused him to kill himself.
What Ursus arctos horribilis said is exactly what the email to Rush said and the person lived in the area and is a business man who was very upset that the truth was being hidden.
This is not true--I was at Paul Accardo's service this week and his wife was there--they had no children. I didn't want to ask about details, but I heard that maybe he found his parents dead. I do not know if it is true.