Manoochehr was 13 years old when he was arrested in connection with a demonstration in Iran.
The year was 1981 and he was accused of supporting the Mujahedin of the People, a guerrilla movement that was in opposition to Ayatollah Khomeini and the Iranian leadership.
In total, he spent ten years in some of the country's most notorious torture prisons.
- They have deprived me of my life, my youth, he says.
Was sentenced to death
He was sentenced to death.
On several occasions, the guards came to his cell and said it was his turn to die today.
But Manoochehr survived and later received a lighter sentence.
However, both his relatives and friends were executed during the years he was imprisoned.
He is now one of the witnesses in the historic trial that is taking place in Stockholm District Court and which deals with the executions of political prisoners in Iran during the late eighties.
Thousands of people were killed but no one has been brought to justice so far - until now.
A 60-year-old Iranian citizen, who was arrested in Sweden in 2019, is charged with murder and violations of international law.
He is suspected, among other things, of having chosen which prisoners would be brought before what has later come to be called the "death commission".
Establishment
Manoochehr met the now accused man several times while he was in the Gohardash prison outside Tehran.
- It was a scary time.
It was quiet everywhere and we were waiting to be told who had been executed and who had survived.
He still struggles with memories of prison time and describes the trial as a small redress for the friends who are no longer alive.
Witnessing means a lot, he says.
- It's a tiny little light in all this darkness.
SVT has sought both the Iranian embassy and the accused man's lawyer to hear their views on the trial, but has not received an answer.
The verdict is expected this spring.
The 60-year-old man denies all charges.