FACTBOX: Security developments in Iraq

(Reuters) - Following are security developments in Iraq at 6 p.m. EDT on Wednesday.

* denotes new or updated item.

* NASSIRIYA - Three U.S. soldiers were killed in an indirect fire attack near Nassiriya, 375 km (235 miles) southeast of Baghdad, on Wednesday, the U.S. military said. Another two soldiers and a civilian were wounded. The term indirect fire is often used to describe rocket or mortar attacks.

* BAGHDAD - Five suspects linked to a suicide bomb attack which killed five U.S. soldiers and an interpreter in central Baghdad on Monday were captured on Tuesday, the U.S. military said.

NEAR KIRKUK - A roadside bomb targeting a local council member near Kirkuk, 250 km (155 miles) north of Baghdad, wounded two of his bodyguards, police said.

BAGHDAD - A mass grave containing 10 bodies, including men, women and children was found on Saturday near Khalis, 80 km (50 miles) north of Baghdad, the Defence Ministry said. The U.S. military had said that initial reports suggested there were some 100 bodies.

BAGHDAD - Three mortar rounds landed in Baghdad's Green Zone, but details of casualties were not available, police said.

BASRA - Gunmen shot and killed a former official of Saddam Hussein's Baath Party in Basra, 550 km (340 miles) south of Baghdad, police said.

BASRA - A senior figure in Shi'ite cleric Moqtada al-Sadr's Basra office, Saed al-Haidery, was shot dead in northern Basra, police and Sadrist officials said.