FACTBOX-Security developments in Iraq

(Reuters) - Following are security developments in Iraq at 4pm British time on Thursday:

* denotes new or updated item.

* BAGHDAD - One U.S. soldier was killed and another wounded in combat in western Baghdad, the U.S. military said.

* BAGHDAD - U.S. forces killed two insurgents, including a leader, and captured two suspected insurgent leaders during raids in Mosul, Baquba and Tarmiya targeting al Qaeda, the U.S. military said.

DIYALA - One U.S. soldier was killed by an explosion near his vehicle while conducting combat operations in Diyala province on Wednesday, the U.S. military said.

BAGHDAD - Iraqi security forces have arrested 72 gunmen following clashes in the city of Kerbala this week that forced hundreds of thousands of pilgrims to flee a religious festival, the Defence Ministry said.

NAJAF - Gunmen killed a local energy official in Najaf near his house in a drive-by shooting on Wednesday night, police said. Najaf is 160 km (100 miles) south of Baghdad.