
An opposition protester shouts in front of an army tank in front of the presidential palace in Cairo.
The interference began on Thursday evening after the BBC's Iranian service showed extensive rolling news coverage from the demonstrations against President Hosni Mubarak.
"It is believed that it is the impact of this coverage which has prompted the jamming," the BBC said in a statement. "Satellite technicians have traced that interference and have confirmed it is coming from Iran."
The BBC said it suspected the Iranian authorities may have acted after an interactive TV show allowed Iranian and Egyptian viewers to exchange their views on the crisis.
Peter Horrocks, director of the BBC World Service, said it would continue to try to broadcast in the Islamic Republic.











