June 10 (Reuters) - Following are security developments in Iraq at 1930 GMT on Sunday: * ISKANDIRIYA - A car bomb exploded on a bridge often used by U.S. forces near al-Iskandiriya, 40 km (25 miles) south of Baghdad, police said. The U.S. military said there were reports of casualties but no other information was available. * BAGHDAD - A U.S. soldier was killed during combat operations in southern Baghdad and one other was wounded, the U.S. military said. * TIKRIT - A U.S. soldier was killed by small arms fire during combat operations in Diyala province north of Baghdad on Saturday, the U.S. military said. One other soldier was wounded. * BAQUBA - U.S. attack helicopters killed eight suspected insurgents south of Khanan near Baquba, 65 km (40 miles) north of Baghdad, on Saturday, the U.S. military said. TIKRIT - A suicide truck bomb killed 14 policemen and wounded 42 more at a police station near Tikrit, 175 km (110 miles) north of Baghdad, police said. BAGHDAD - Iraqi forces killed five insurgents and detained 56 others around the country in the past 24 hours, the Defence Ministry said. TUZ KHURMATO - A roadside bomb targeting a military patrol killed one soldier and wounded six others in the Tuz Khurmato district, south of the northern city of Kirkuk, police said. HAWIJA - A roadside bomb targeting a police patrol wounded three civilians in Hawija, 70 km (43 miles) southwest of Kirkuk, police said. BAGHDAD - Gunmen killed the leader of the Shi'ite Dialogue Faction, Jawdet Kadhem al-Obeidi, and wounded his driver in a drive-by shooting in western Baghdad, police said. BAGHDAD - A car bomb killed one civilian and wounded five near a petrol station in the Bayaa district of southwestern Baghdad, police said. BAGHDAD - A car bomb killed one civilian and wounded three others in the Saidiya district in southwestern Baghdad, police said.