Security forces imposed a curfew on the central Iraqi city of Diwaniyah on Friday amid ongoing Iraqi military raids and clashes with insurgents. The curfew began at 5:00 am (0100 GMT), with only security forces and gunmen visible on the streets after daybreak, an AFP correspondent said. Iraqi troops conducted house-to-house searches, made arrests, clashed with gunmen and called in an air strike after sealing off four neighborhoods in central Diwaniyah late on Thursday, the correspondent said. Sporadic clashes continued in the center of the city after daybreak with heavier fighting reported in northern Diwaniyah. A witness told AFP he saw the bodies of five gunmen and dozens more wounded.