“…As Tomczak (2022, p. 500) argues, 'these detailed, publicly available documents are an underutilized data source, providing extensive information about deaths, prisons, and responses to prison deaths over time.' PPO fatal investigation reports have been analysed to explore self-inflicted deaths or deaths by suicide (Tomczak, 2018) domestic violence perpetration and suicide risk in males imprisoned (Dewar, 2018) and natural cause deaths involving palliative care (Kirkham, 2021). To our knowledge, the research reported here is the first time that they have been used to analyse substance-related deaths.…”