I think we can all safely rule out accident, since he has been charged with murder. Murder implies the exact opposite meaning to 'accident'. Accident is an unintentional consequence of an incidental action, murder is the intentional consequence of a deliberate and considered choice of operative action. .. ... with all due respect, accident is off the board now as an alternative explanation for Mrs Murphy's demise.
She was murdered, he is charged with her murder , based on the current evidence VICPOL have to hand.