There have been fresh clashes in Tehran at the funeral of a student killed in anti-government protests on Monday.
Anger between supporters and critics of the Iranian government spilled over into violence as mourners made their way through the city.
26-year-old Sanee Zaleh was one of the two people who died when opposition campaigners rallied for the first time in more than a year.
Both sides have blamed each other for his death.
Thousands of people took to the streets of Tehran on Monday, wanting to demonstrate their solidarity with the opposition movements in Tunisia and Egypt.
Now the country’s hard-line clerics have added their voice to calls for the opposition leaders to be tried and executed.
Mir Hossein Moussavi and Mehdi Karroubi have been under house arrest since they issued the call to protest last week.