While Petraeus credited the surge for the decrease in violence, the decrease also closely corresponded with a cease-fire order given by Iraqi political leader Muqtada al-Sadr on August 29, 2007. Al-Sadr's order, to stand down for six months, was distributed to his loyalists following the deaths of more than 50 Shia Muslim pilgrims during fighting in Karbala the day earlier.[72]