On the 1st of July 1996, at around 8.30pm, Senior Constable Kennaugh and Senior Constable Glenn Murray were on duty in the Mandurah area. During heavy rainfall, Senior Constable Murray lost control of the police vehicle, crashing into a tree on the median strip on the Mandurah Road, near Singleton.

Senior Constable Kennaugh was the first female Police officer to be killed on duty in Western Australia.  

Senior Constable Murray received severe head and chest injuries and never recovered from his injuries, requiring full time health care.  

Senior Constable Kennaugh was given a Police funeral with full honours.

Senior Constable Kennaugh left behind her husband, Paul Spiers, and two children.