FACTBOX: Security developments in Iraq

(Reuters) - Following are security developments in Iraq at 11 a.m. EDT on Tuesday.

* denotes new or updated item.

* DHULUIYA - A suicide car bomber killed five people, including three members of a neighborhood security unit, and wounded 14 in an attack on a checkpoint in Dhuluiya, north of Baghdad, police Lieutenant-Colonel Ibrahim al-Jubouri said.

* KUT - At least 10 people were killed in clashes between security forces and the Mehdi Army militia loyal to anti-U.S. Shi'ite cleric Moqtada al-Sadr in Kut, 170 km (105 miles) southeast of Baghdad, a source at Kut's al-Zahraa hospital said.

NEAR NASSIRIYA - A roadside bomb hit a bus carrying a family returning from a funeral near the southern Iraqi city of Nassiriya, killing at least 14 people and wounding 10, Iraqi police and the British military said.

NEAR SAMARRA - The bodies of 20 decomposed people, including six women and five children, were found dumped in a mass grave near the city of Samarra, 100 km (60 miles) north of Baghdad, police said. They blamed al Qaeda for the deaths.

BAGHDAD - Around 20 gunmen attacked a juvenile prison and freed five prisoners in Baghdad, police said. Three guards and three prisoners were wounded in the attack.

BAGHDAD - U.S. forces have killed five insurgents and detained 11 suspects in the past two days during operations to disrupt al Qaeda networks operating in central and northern Iraq, the U.S. military said.

NEAR KERBALA - A roadside bomb targeted a police patrol, wounding three policemen and a child near the city of Kerbala, 110 km (70 miles) southwest of Baghdad, police said.