The mayor of Sadr City, a Shia militia stronghold in Baghdad, was wounded when gunmen opened fire on his car and a senior police officer was killed, Iraqi and US officials said yesterday. Sheikh Raheem al-Darruji has been a key figure in facilitating a recent US and Iraqi security crackdown in Sadr City, long a no-go area for US forces and a bastion of the Mehdi Army, a militia loyal to radical cleric Moqtada al-Sadr.An Iraqi police source said Darruji was driving in a private car with Colonel Mohammed Mutashar on Thursday afternoon in the Habibiya district of Sadr City when gunmen in another car opened fire, killing the policeman and wounding the mayor. The driver of the car was also killed, a US military spokesman said, confirming the attack. He said the mayor was treated at a US hospital and was in "good condition" on Friday. "He has been helpful to the coalition and the efforts to establish the joint security station inside of Sadr City," Lieutenant Colonel Scott Bleichwehl said of the mayor.