The Crown Office and Procurator Fiscal Service (COPFS) have the sole legal responsibility for the investigation of all sudden, unexpected or suspicious deaths in Scotland, regardless of whether criminality is involved. The role of the Procurator Fiscal is to ensure that a full and proper investigation is carried out into all the circumstances surrounding the death(s).
You can find more information on the role of the Procurator Fiscal in sudden deaths on the COPFS website.