BAGHDAD, Iraq - In their boldest and deadliest attack yet, insurgents waylaid three minibuses carrying U.S.-trained Iraqi soldiers heading home on leave and massacred about 50 of them — forcing many to lie down on the ground and shooting them in the head, officials said Sunday. Some accounts by police said the rebels were dressed in Iraqi military uniforms.
A claim of responsibility posted on an Islamist Web site attributed the attack to followers of Jordanian-born terror mastermind Abu Musab al-Zarqawi.
The killing of so many Iraqi soldiers — unarmed and in civilian clothes — in such an apparently sure-footed operation reinforced American and Iraqi suspicions that the country's security services have been infiltrated by insurgents.
Elsewhere, a U.S. diplomat was killed Sunday morning when a rebel-fired rocket or mortar shell crashed into the trailer where he was sleeping at an American base near the Baghdad airport, the U.S. Embassy announced.
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