Objective: The aim of the present study was to explore the mental health and offending histories for all cases that resulted in fatal use of force by Victoria Police between November 1982 and February 2007. Methods: Forty-eight fatalities were extracted from the Use of Force (UoF) Register, and then linked with the mental health and police contacts databases. These data were supplemented, where necessary, with relevant information from Coronial Reports and an Office of Police Integrity Report. Results: All but six cases had involved recorded histories with mental health and criminal justice systems before the fatal incident occurred. Rates of all Axis I disorders were significantly overrepresented, with estimated rates of psychosis and schi...