Iran's Mousavi says he will continue fight for reform

Mr Mousavi said the revolution had failed to achieve its goals

Iran's opposition leader Mir Hossein Mousavi has said he will continue his struggle against the government.

In a statement posted on his website, Mr Mousavi said the 1979 Islamic revolution had failed to achieve most of its goals.

He said politically motivated arrests of protesters were illegal and more should be done to secure people's rights.

His comments constitute one of his strongest challenges to the government.

They also come at a particularly sensitive time. Iran will mark the 31st anniversary of the founding of the Islamic Republic on 11 February.

As one of the key players in the founding of the Islamic Republic, his comments have extra resonance.

Jon Leyne, the BBC's Tehran correspondent who is reporting from London, says Mr Mousavi's comments will outrage hard-line supporters of the government. He is now pushing to the very limit of what he can say without being arrested.