``I have not heard his voice in 20 days. Whom should I tell? I can't bear this emotionally. What sin, what crime has my son committed? Is it right for a gifted university student to be in prison? I went to Tehran last week, but the case judge told me: 'Leave, we will inform you.' I want to go to Evin Prison on Friday, to see what happens. I will wait there, maybe I can hear my son's voice. It is my right to hear my son's voice,'' Gholzadeh's father told the International Campaign for Human Rights in Iran.
``What sin, what crime has my son committed?''