Thirty-nine incidents of homicide-suicide occurring in Victoria, Austr
alia between 1985 and 1989 were examined. In 33 cases the assailants w
ere men. The victims were spouses or women living in a de facto marria
ge. The majority of the victims were shot, and this was also the most
frequent method of suicide. Breakdown in a relationship was the most f
requent reason for killing. Mental illness of the assailant accounted
for the killing in approximately 20% of cases. Physical ill health and
financial stress were identified as important associative factors, pa
rticularly in the elderly. The pattern of homicide-suicide in Victoria
is similar to that observed in other jurisdictions and represents an
important and distinct subgroup of homicide.