BAGHDAD, Iraq (CNN) -- Two suicide vehicle bombers struck a U.S.-Iraqi military outpost in Taji on Wednesday night, the U.S. military said in a statement. U.S. Black Hawk helicopters fly over Baghdad in June. A Black Hawk chopper crashed Wednesday in Iraq. The attack killed four Iraqi soldiers, the military said, and wounded 11 U.S. soldiers and four Iraqi soldiers. The incident occurred at 8:45 p.m., according to an Iraqi Interior Ministry official. Eight Iraqis suspected of having information concerning the attack have been detained, the U.S. military said. Taji is 14 kilometers, or more than 8 miles, north of the capital, but still in Baghdad province.
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NEW: 8 Iraqis suspected of having information about attack are detained
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37 killed, 81 wounded in suicide car bombing north of Baghdad
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UH-60 Black Hawk helicopter not shot down, U.S. says
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Iraq's prime minister lashes out at U.S. lawmaker's critical remarks
Police said that when they responded, @placeholder troops fired on them and would not allow them near the base.