Murder?
I think the couple in San Francisco, a few years back, were convicted of manslaughter.
Murder is intent.
Manslaughter is negligence...
The woman, Knoller was convicted of second-degree murder and it held through the appeals process.
“On June 1, 2007, the California Supreme Court rejected the Court of Appeal’s decision, ruling that implied malice required proof that a defendant acted with “conscious disregard” of the danger to human life.[20] The Court remanded the case to the trial court to reconsider whether to allow the second degree murder conviction to stand, in light of this new reasoning.[21][22] The San Francisco Superior Court reinstated the conviction for second-degree murder, and on September 22, 2008, the court sentenced Knoller to 15 years to life”
http://en.wikipedia.org/wiki/Death_of_Diane_Whipple