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Background: Limited information is available about suicidal behavior in the Pacific Islands. Forty percent of the New Caledonian population is indigenous Kanak; insights into the characteristics of suicide deaths in this population compared to other ethnic groups would be valuable. The aim of this paper is to deepen our understanding of the cultural underpinnings of suicide in New Caledonia by presenting the results of the WHO/START psychological autopsy study., Method: A case-series psychological autopsy study was conducted based on medical, police files, and interviews with relatives of 52 individuals who died by suicide in 2014 and 2015 in New Caledonia., Results: Kanak indigenous individuals represented more than half of suicides. Prevalence of mental disorders was identified in 62% of suicide decedents; a previous suicide attempt was frequent (37% of cases). A serious argument with a partner was the most prevalent life event (60%). Few warning signs were present among young people and Kanak in general., Conclusion: Comparison with information on the general population suggests indigenous Kanak are more vulnerable and that having a mental health disorder plays an important role in suicide. Violent arguments with a partner could also be a major risk factor. Traditional protective factors (being employed, living with their family or partner, religion) appeared to have limited effect on suicide. Mental health promotion, prevention, and care should be prioritized. Prevention strategies, including domestic violence prevention are recommended in New Caledonia. Further research is needed to better identify young and Kanak subjects at risk of suicide., (Copyright © 2019. Published by Elsevier B.V.)