Iran's leading religious leaders have issued another warning to the country's opposition supporters to halt their anti-government protests.

Ayatollah Ahmad Jannati, the speaker of the Iran's top legal body, the Guardian Council, accused the protesters of corrupting Gods earth - a charge punishable by the death penalty.

But Mir Hossein Mousavi, Iran's main opposition leader, has said he is prepared to die for his cause, and he called for an end to the government crackdown on opposition protests.

Al Jazeera's Alireza Ronaghi reports from Tehran.