A U.S. military spokesman said the troops fired on the civilian car because it was moving erratically outside a U.S. base in Baqouba, 55 kilometers northeast of the capital Baghdad.
The spokesman said it was "one of these regrettable, tragic incidents."
Iraqi officials have complained about American troops firing at civilian vehicles that fail to approach checkpoints carefully or otherwise appear suspicious.
U.S. officials point to the heavy toll of suicide car bombers who often strike U.S. and Iraqi checkpoints.
RFE/RL Iraq Report
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