The one that was supposedly a gas pipe explosion?
It was sectarian violence.
http://www.nytimes.com/2006/08/15/world/middleeast/15cnd-iraq.html?ex=1313294400&en=791fbf910f54ab2f&ei=5088&partner=rssnyt&emc=rssBlast That Killed 63 in Iraq Is Now Called an Attack
By DAMIEN CAVE
Published: August 15, 2006
BAGHDAD, Iraq, Aug. 15 — The American military said today that two car bombs ignited a gas line in the explosion that killed at least 63 Iraqis on Sunday, retreating from earlier assertions that the explosion was the result of an accidental gas leak.
In all, four car bombs exploded in a 30-minute period near a market in southeast Baghdad, the military said today in a statement. Several building toppled because of damage from the blasts, and at least 140 people were wounded.
The military’s statement today corrected comments made Monday by Maj. Gen. William B. Caldwell IV, who told reporters that the Iraqi deaths were caused solely by the gas main explosion and not by any attack.
Iraqi security officials denounced his statements as false at the time.
General Caldwell “was speaking in good faith, but had incomplete information,” Lt. Col. Barry Johnson, a spokesman for the American military, wrote in an e-mail message today explaining the discrepancy.
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