BAGHDAD, Iraq (CNN) -- Two or three mortars or rockets were fired late Thursday into Baghdad's "green zone, " in the vicinity of the U.S.-led administration's headquarters, a U.S. military spokesman said.

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It says that since the truce came into effect a total of nine rockets and mortars have hit and two have been intercepted.

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Eight American troops and two Afghan security force members were killed Saturday when militants opened fire on an outpost with rockets, mortars and heavy-caliber machine guns, according to an initial U.S. military report on the battle.

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