May 18 (Reuters) - Following are security developments in Iraq at 1915 GMT on Friday:

* denotes new or updated item.

BAGHDAD - Unknown assailants killed two ABC News broadcast journalists in Iraq, the U.S. news organisation said. The men were identified as cameraman Alaa Uldeen Aziz, 33, and soundman Saif Laith Yousuf, 26, ABC News said.

* DIYALA - Three U.S. soldiers were killed when an explosion occurred near their vehicle in Diyala province on Friday, the U.S, military said without giving further details.

BAGHDAD - Two American soldiers were killed and nine others were wounded in separate attacks in southern Baghdad on Thursday, the military said in a statement on Friday.

MUSSAYAB - A suicide bomber blew up his vehicle at an Iraqi police checkpoint in the town of Mussayab, south of Baghdad, killing three people and wounding four, police said. Police said most of the victims were policemen.

MOSUL - Three truck drivers were killed on Thursday after they were attacked on a road between the northern city of Mosul and Kirkuk, police said on Friday.

KIRKUK - A Kurdish peshmerga soldier was killed in the volatile city of Kirkuk on Friday, police said.

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