Here it is, distilled down:
From ProteinWisdom:
Centcom has confirmed that Capt. Jamil Hussein, the primary source for the recent kerosene mosque murder reports—and for a whole host of reports of Shia massacres recounted by the AP—is neither an employee of Iraq’s Ministry of Interior nor is he a police captain.
In short, the AP has been relying on a bogus source for much of its reporting on Shia violence against Sunnis since at least April.
And believe me, this has not been the only such case.