May 17 (Reuters) - Following are security developments in Iraq at 1100 GMT on Thursday: * Indicates a new or updated entry. DIWANIYA - At least three civilians were killed, including a woman, and four wounded in clashes between militiamen and security forces in the Shi'ite city of Diwaniya, 180 km (110 miles) south of Baghdad, police said. * BAGHDAD - The U.S. military said three soldiers had been killed and one wounded when their patrol was hit by a roadside bomb south of Baghdad. BAGHDAD - Two civilians were killed and five wounded by a roadside bomb in the Diyala bridge area in southeastern Baghdad, police said. ISKANDARIYA - A roadside bomb killed a civilian and wounded three others in Iskandariya, 40 km (25 miles) south of Baghdad, police said. HILLA - A policeman was killed and three of his family wounded when a militant hurled a hand grenade at his home in Hilla, 100 km (60 miles) south of Baghdad, police said. BASRA - Gunmen killed a police major along with his son, police said. DIWANIYA - Gunmen killed a civil servant in a drive-by shooting, police said. LATIFIYA - Police found two bodies bearing signs of torture and bullet wounds in the town of Latifiya 40 km (25 miles) south of Baghdad, police said. KIRKUK - Police found a bullet-riddled body in the ethnically mixed northern city, police said. BAGHDAD - The Iraqi army killed six insurgents in different parts of Iraq over the last 24 hours, the Iraqi army said in a statement.