Sadr, the wannabe Shiite leader, may have been arrested. Meanwhile, Iran is distancing themselves as fast as possible:

Iran is dismissing attempts by Washington to link it to Moqtada al-Sadr, the young radical cleric whose militia has battled US forces in neighbouring Iraq.

Iranian leaders, including President Mohammad Khatami and the influential former president Ali Akbar Hashemi Rafsanjani, have called for calm in Iraq while blaming US mismanagement for the crisis. On Monday Hamid-Reza Assefi, the foreign ministry spokesman, dismissed a report that Mr Sadr would come to Tehran as a political refugee.

I don't think Sadr was counting on that.