This is fresh from CNN - Barbara Starr just did a report with a gravest voice I've ever seen. She repeated "multiple sources confirm" after every sentence. There was some incident last year at Haditha where Marines came under IED attack and later 15 civilians were reported dead from the explosion or in the "Fog of War"
Now after a lot of preliminary investigation Pentagon has opened an official inquiry into BOTH whether there was any misconduct and why the initial press release had such misleading phrasing.
No other details yet, but she sounded extremely serious - and this is not a leak.