US military carries out "controlled explosion" near soccer field, wounds 30, including 9 children. Conflicting reports as to whether many kids died.

This is a weird story. Earlier today, a blast near a soccer field in Ramadi kills scores of children. Also today, apparently, the US military conducted an explosion near a soccer field in Ramadi that hurt a bunch of children. But the US military is saying the deadly attack couldn't have happened, because they'd have known about it. At the same time, both of these attacks sound awful similar - like they may be the same explosion, i.e., one we caused.

Here's the OTHER blast in Ramadi that killed 18 boys near a soccer field:

A car bomb exploded Tuesday near a park popular with young soccer players, killing at least 18 boys in [Ramadi] a city west of Baghdad known as a center of the Sunni insurgency, police said.

And here's the blast the US military caused in the same town near a soccer field, injuring kids:

The U.S. military said its soldiers had carried out a controlled explosion in Ramadi, near a soccer field, that wounded 30 people, including nine children.

But here's where it gets stranger. The US says they can't imagine the deadly attack is real since they weren't aware of it:

Iraq's government and police said a bomb blast near a soccer field in the western city of Ramadi on Tuesday killed 18 people, mostly children, but the U.S. military said it was unaware of such an attack....

"I can't imagine there would be another attack involving children without our people knowing," said Major Jeff Pool, a spokesman for U.S. forces in western Anbar province. The wounded had cuts and bruises, he said [referring to the explosion the US caused near a soccer field].

So, is the attack that killed the children "real" or didn't it happen at all? And if it real, is it the SAME explosion that US caused, and if so, did we also kill children and no one is telling us?