The inquest into the death of a teenager from Truro who died in a mental health unit has started this morning.
Ben Cowburn died in December 2010 at the Longreach unit near Redruth.
Ben's family has waited more than three years for the inquest to take place.
Following Ben's death the family set up the Invictus Trust charity which has raised awareness of mental health issues for young people and pushed for the creation of a specialist unit in Cornwall for 13 to 25-year-olds.
Both the family and the Cornwall Partnership NHS Foundation Trust, which provides mental health services, have legal representation at the inquest, which is taking place before a jury in Truro and is expected to last nine days.