Supporters had been due to turn out en masse in Tehran on Monday afternoon, despite government warnings to stay off the streets. But this morning, a statement on Mr Mousavi’s campaign website announced that the demonstration had been postponed – although it said Mr Mousavi would go to the site to ensure any supporters who showed up remained calm. Mr Mousavi’s wife and co-campaigner, Zahra Ranavard, was reported as warning that riot squads would be equipped with live ammunition, raising the prospect of serious bloodshed. Iran’s Interior Ministry said Mr Mousavi would be responsible for any consequences if he went ahead with the protest.