Fri May 9, 7:35 AM ET
The gunmen were killed in several clashes on Thursday, the military said in a statement.
It said air strikes and tanks were used to attack militiamen attempting to launch rockets from the slum or shoot at U.S. troops on patrol. Hospitals in Sadr City said they had received four bodies and 51 wounded. Among the wounded were children.
Fighting has raged in Baghdad since Prime Minister Nuri al-Maliki ordered a crackdown on militias in late March.
Several hundred people have been killed in fighting that shows no sign of easing. Aid workers have warned of a looming humanitarian crisis in the slum, home to 2 million people.
Maliki, himself a Shi'ite, says the crackdown aims to disarm militias but Sadr's followers see it as an attempt by his U.S.-backed government to sideline the cleric's mass movement before local elections in October.
Sadr, who has a strong following amon
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