Feb 4 (Reuters) - Following are security developments in Iraq at 1700 GMT on Wednesday:

* denotes a new or updated item.

* MOSUL - A roadside bomb attack on a U.S. patrol wounded two civilians in Mosul, 390 km (240 miles) north of Baghdad, police said.

* MOSUL - A civilian was wounded by a grenade thrown at a U.S. military convoy, the U.S. military said. It said the Americans returned fire at the assailant.

BAQUBA - Iraqi police force found a mass grave containing eight decayed, decapitated bodies in a town north of Baquba, 65 km (40 miles) northeast of Baghdad, a police source said. The area was once controlled by al-Qaeda militants, the source added.

BAGHDAD - A bomb attached to a car seriously wounded four people, including a tribal guard unit leader, and killed his son in Mansour district of western Baghdad, police said.

KIRKUK - Gunmen in a speeding car opened fire and wounded a civilian in central Kirkuk, 250 km (155 miles) north of Baghdad, police said.

MOSUL - A parked car bomb targeting a police patrol wounded two people in northern Mosul, police said.

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