 The al-Khulani mosque was named by the Shia in honor of one of their revered four "earthly" deputies anointed by the Imam Mohammed al-Mahdi (the so-called "Hidden Imam" who disappeared in the 9th century).Iraq Police said a truck stacked with electric fans and air conditioners was used to deliver the bomb to a parking lot near the Khulani mosque.The U.S. military offered a different version of events, declaring that "the truck was loaded with propane tanks and that a suicide driver detonated his bomb when the vehicle became stuck trying to drive over a curb."