1 An overview of what happens when someone dies as a result of an accident or in unexplained circumstances. 2  Victims of crime and the coroner. 3  Relationship between victims of crime and the coroner when there is an enquiry into a death in Ireland.itnesses at an inquest. The Coroner decides which witnesses should give evidence at the inquest and the order in which they should give their evidence. Evidence must be presented so as to provide a logical sequence of the circumstances surrounding the death. The postmortem result establishes the medical cause of death.