British Iranian survivors of a prison massacre in the 1980s have opened up about their horror as they testified in a case kept hidden for 34 years.
Hamid Nouri, 61, went on trial in Sweden over the mass execution and torture of prisoners in 1988.
In a groundbreaking verdict this week, the court in Stockholm found him guilty of war crimes in connection with the mass executions of political prisoners and he was sentenced to life in prison.