But according to the information in the story, there is not sufficient evidence for murder; the deaths, if proven well enough to have at least been caused by negligence, by state law, probably affects a charge of manslaughter.
I was replying to someone who said, "at worst it was accidental manslaughter".
At worst it was intentional murder. At best it was accidental manslaughter. The article does not provide enough information to strongly suggest it was one way or the other. The person I was responding to was clearly is in error. That is the point.